Question 1

When a ball is thrown straight up with no air resistance, the acceleration at its highest point

Accepted Answer

A)  is upward 
B)  is downward 
C)  is zero 
D)  reverses from upward to downward 
E)  reverses from downward to upward

Question 2

A ball is thrown downward from the top of a building with an initial speed of 25 m/s. It strikes the ground after 2.0 s. How high is the building, assuming negligible air resistance?

Accepted Answer

A)  20 m 
B)  30 m 
C)  50 m 
D)  70 m

Question 3

A car starts from rest and accelerates at a steady 6.00 m/s2. How far does it travel in the first 3.00 s?

Accepted Answer

A)  9.00 m 
B)  18.0 m 
C)  27.0 m 
D)  36.0 m 
E)  54.0 m

Question 4

Consider a car that travels between points A and B. The car's average speed can be greater than the magnitude of its average velocity, but the magnitude of its average velocity can never be greater than its average speed.

Accepted Answer

A) True 
 B)False

Question 5

Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of 2.40 m/ $s ^ { 2 }$ . How long after car A begins to accelerate does it take car A to overtake car B?

Accepted Answer

A)  5.50 s 
B)  12.6 s 
C)  19.0 s 
D)  316 s 
E)  Car A never overtakes car B.

Question 6

Human reaction time is usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you catch it, assuming negligible air resistance?

Accepted Answer

A)  At least 3.0 cm 
B)  At least 4.9 cm 
C)  At least 6.8 cm 
D)  At least 9.8 cm

Question 7

A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, and then 1.0 km north to return to its starting point. This trip takes 45 min. What was the bear's average speed?

Accepted Answer

A)  0.00 km/h 
B)  0.067 km/h 
C)  4.0 km/h 
D)  5.3 km/h

Question 8

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the instantaneous velocity of the particle when t = 1.0 s?

Accepted Answer

The answer of The graph in the figure shows the...

Question 9

Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and decrease their velocities at the same rate. If car B travels a distance D before stopping, how far does car A travel before stopping?

Accepted Answer

A)  4D 
B)  2D 
C)  D 
D)  D/2 
E)  D/4

Question 10

A car starts from rest and accelerates uniformly at 3.0 m/s2 toward the north. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2 toward the north. How long after the second car starts does it overtake the first car?

Accepted Answer

A)  12 s 
B)  19 s 
C)  21 s 
D)  24 s

Question 11

A car starting from rest accelerates at a constant 2.0 m/s2 for 10 s. It then travels with constant speed it has achieved for another 10 s. Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s2. How far does it travel after starting?

Accepted Answer

A)  200 m 
B)  300 m 
C)  400 m 
D)  500 m

Question 12

An object is moving with constant non-zero acceleration in the +x direction. The position versus time graph of this object is

Accepted Answer

A)  a horizontal straight line. 
B)  a vertical straight line. 
C)  a straight line making an angle with the time axis. 
D)  a parabolic curve.

Question 13

The velocity v(t) of a particle as a function of time is given by v(t) = (2.3 m/s) + (4.1 m/s2)t - (6.2 m/s3)t2. What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

Accepted Answer

A)  -13 m/s2 
B)  -15 m/s2 
C)  13 m/s2 
D)  15 m/s2 
E)  0 m/s2

Question 14

If, in the figure, you start from the Bakery, travel to the Cafe, and then to the Art Gallery
(a) what distance you have traveled?
(b) what is your displacement?

Accepted Answer

The answer of If, in the figure, you start from...

Question 15

Acceleration is sometimes expressed in multiples of g, where $g = 9.8 \mathrm {~m} / \mathrm { s } ^ { 2 }$ is the acceleration of an object due to the earth's gravity. In a car crash, the car's forward velocity may go from $29 \mathrm {~m} / \mathrm { s }$ to $0 \mathrm {~m} / \mathrm { s }$ in $0.15 \mathrm {~s}$ How many g's are experienced, on average, by the driver?

Accepted Answer

A)  20 g 
B)  14 g 
C)  24 g 
D)  26 g

Question 16

Two athletes jump straight up. John has twice the initial speed of Harry. Compared to Harry, John stays in the air

Accepted Answer

A)  0.50 times as long as Harry. 
B)  the same time as Harry. 
C)  twice as long as Harry. 
D)  three times as long as Harry. 
E)  four times as long as Harry.

Question 17

A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42 m/s at the end of the catapult. Assuming the acceleration is constant, how far did it travel during those 2.0 s?

Accepted Answer

A)  16 m 
B)  24 m 
C)  42 m 
D)  84 m

Question 18

A child standing on a bridge throws a rock straight down. The rock leaves the child's hand at time t = 0 s. If we take upward as the positive direction, which of the graphs shown below best represents the velocity of the stone as a function of time?

Accepted Answer

A) 
 
B) 
 
C) 
 
D) 
 
E)

Question 19

The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s²)t². What is the average velocity of the particle between t = 0.30 s and t = 0.40 s?

Accepted Answer

The answer of The position x(t) of a particle as...

Question 20

Two objects are dropped from a bridge, an interval of 1.0 s apart. Air resistance is negligible. During the time that both objects continue to fall, their separation

Accepted Answer

A)  increases. 
B)  decreases. 
C)  stays constant. 
D)  increases at first, but then stays constant. 
E)  decreases at first, but then stays constant.

Exam 2: Motion in One Dimension

When a ball is thrown straight up with no air resistance, the acceleration at its highest point

A ball is thrown downward from the top of a building with an initial speed of 25 m/s. It strikes the ground after 2.0 s. How high is the building, assuming negligible air resistance?

A car starts from rest and accelerates at a steady 6.00 m/s². How far does it travel in the first 3.00 s?

Consider a car that travels between points A and B. The car's average speed can be greater than the magnitude of its average velocity, but the magnitude of its average velocity can never be greater than its average speed.

Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of 2.40 m/ $s ^ { 2 }$ . How long after car A begins to accelerate does it take car A to overtake car B?

Human reaction time is usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you catch it, assuming negligible air resistance?

A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, and then 1.0 km north to return to its starting point. This trip takes 45 min. What was the bear's average speed?

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the instantaneous velocity of the particle when t = 1.0 s?

Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and decrease their velocities at the same rate. If car B travels a distance D before stopping, how far does car A travel before stopping?

A car starts from rest and accelerates uniformly at 3.0 m/s² toward the north. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s² toward the north. How long after the second car starts does it overtake the first car?

A car starting from rest accelerates at a constant 2.0 m/s² for 10 s. It then travels with constant speed it has achieved for another 10 s. Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s². How far does it travel after starting?

An object is moving with constant non-zero acceleration in the +x direction. The position versus time graph of this object is

The velocity v(t) of a particle as a function of time is given by v(t) = (2.3 m/s) + (4.1 m/s²) t - (6.2 m/s³) t². What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

If, in the figure, you start from the Bakery, travel to the Cafe, and then to the Art Gallery (a) what distance you have traveled? (b) what is your displacement?

Two athletes jump straight up. John has twice the initial speed of Harry. Compared to Harry, John stays in the air

A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42 m/s at the end of the catapult. Assuming the acceleration is constant, how far did it travel during those 2.0 s?

A child standing on a bridge throws a rock straight down. The rock leaves the child's hand at time t = 0 s. If we take upward as the positive direction, which of the graphs shown below best represents the velocity of the stone as a function of time?

The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s²)t². What is the average velocity of the particle between t = 0.30 s and t = 0.40 s?

Two objects are dropped from a bridge, an interval of 1.0 s apart. Air resistance is negligible. During the time that both objects continue to fall, their separation

Exam 2: Motion in One Dimension

When a ball is thrown straight up with no air resistance, the acceleration at its highest point

A ball is thrown downward from the top of a building with an initial speed of 25 m/s. It strikes the ground after 2.0 s. How high is the building, assuming negligible air resistance?

A car starts from rest and accelerates at a steady 6.00 m/s2. How far does it travel in the first 3.00 s?

Consider a car that travels between points A and B. The car's average speed can be greater than the magnitude of its average velocity, but the magnitude of its average velocity can never be greater than its average speed.

Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of 2.40 m/ s2s ^ { 2 }s2 . How long after car A begins to accelerate does it take car A to overtake car B?

Human reaction time is usually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you catch it, assuming negligible air resistance?

A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, and then 1.0 km north to return to its starting point. This trip takes 45 min. What was the bear's average speed?

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the instantaneous velocity of the particle when t = 1.0 s?

Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and decrease their velocities at the same rate. If car B travels a distance D before stopping, how far does car A travel before stopping?

A car starts from rest and accelerates uniformly at 3.0 m/s2 toward the north. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2 toward the north. How long after the second car starts does it overtake the first car?

A car starting from rest accelerates at a constant 2.0 m/s2 for 10 s. It then travels with constant speed it has achieved for another 10 s. Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s2. How far does it travel after starting?

An object is moving with constant non-zero acceleration in the +x direction. The position versus time graph of this object is

The velocity v(t) of a particle as a function of time is given by v(t) = (2.3 m/s) + (4.1 m/s2) t - (6.2 m/s3) t2. What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

If, in the figure, you start from the Bakery, travel to the Cafe, and then to the Art Gallery (a) what distance you have traveled? (b) what is your displacement?

Two athletes jump straight up. John has twice the initial speed of Harry. Compared to Harry, John stays in the air

A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42 m/s at the end of the catapult. Assuming the acceleration is constant, how far did it travel during those 2.0 s?

A child standing on a bridge throws a rock straight down. The rock leaves the child's hand at time t = 0 s. If we take upward as the positive direction, which of the graphs shown below best represents the velocity of the stone as a function of time?

The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s2)t2. What is the average velocity of the particle between t = 0.30 s and t = 0.40 s?

Two objects are dropped from a bridge, an interval of 1.0 s apart. Air resistance is negligible. During the time that both objects continue to fall, their separation

A car starts from rest and accelerates at a steady 6.00 m/s². How far does it travel in the first 3.00 s?

Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of 2.40 m/ $s ^ { 2 }$ . How long after car A begins to accelerate does it take car A to overtake car B?

A car starts from rest and accelerates uniformly at 3.0 m/s² toward the north. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s² toward the north. How long after the second car starts does it overtake the first car?

A car starting from rest accelerates at a constant 2.0 m/s² for 10 s. It then travels with constant speed it has achieved for another 10 s. Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s². How far does it travel after starting?

The velocity v(t) of a particle as a function of time is given by v(t) = (2.3 m/s) + (4.1 m/s²) t - (6.2 m/s³) t². What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s²)t². What is the average velocity of the particle between t = 0.30 s and t = 0.40 s?