Question 1

Neglecting the effect of air resistance, a stone dropped off a 175-m high building lands on the ground in:

Accepted Answer

A) 3 s 
B) 4 s 
C) 6 s 
D) 18 s 
E) 36 s 
A) 3 s 
B) 4 s 
C) 6 s 
D) 18 s 
E) 36 s C

Question 2

Which of the following five coordinate versus time graphs represents the motion of an object whose speed is increasing?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V A

Question 3

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?

Accepted Answer

A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = 4m, x f = -2m 
E) xi = -4m, x f = 4m 
A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = 4m, x f = -2m 
E) xi = -4m, x f = 4m E

Question 4

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s2 for t in seconds.It stops at t =

Accepted Answer

A) 64 s 
B) 32 s 
C) 16 s 
D) 8.0 s 
E) 4.0 s 
A) 64 s 
B) 32 s 
C) 16 s 
D) 8.0 s 
E) 4.0 s

Question 5

If you drop a rock and a feather, the rock hits the ground first.This demonstrates that:

Accepted Answer

A) The acceleration of gravity is not constant. 
B) Heavier objects are accelerated faster by gravity than lighter objects are. 
C) Air resistance has a larger effect on feathers than on rocks. 
D) Rocks can't fly. 
E) Gravity has little effect on a feather. 
A) The acceleration of gravity is not constant. 
B) Heavier objects are accelerated faster by gravity than lighter objects are. 
C) Air resistance has a larger effect on feathers than on rocks. 
D) Rocks can't fly. 
E) Gravity has little effect on a feather.

Question 6

The diagram shows a velocity-time graph for a car moving in a straight line.At point Q the car must be:

Accepted Answer

A) moving with zero acceleration 
B) traveling downhill 
C) traveling below ground-level 
D) reducing speed 
E) traveling in the reverse direction to that at point P 
A) moving with zero acceleration 
B) traveling downhill 
C) traveling below ground-level 
D) reducing speed 
E) traveling in the reverse direction to that at point P

Question 7

A car starts from rest and goes down a slope with a constant acceleration of 5 m/s2.After 5 seconds the car reaches the bottom of the hill.What is its speed at the bottom of the hill?

Accepted Answer

A) 1 m/s 
B) 12.5 m/s 
C) 25 m/s 
D) 50 m/s 
E) 160 m/s 
A) 1 m/s 
B) 12.5 m/s 
C) 25 m/s 
D) 50 m/s 
E) 160 m/s

Question 8

The coordinate of a particle in meters is given by x(t)= 16t - 3.0t3, where the time t is in seconds.The particle is momentarily at rest at t =

Accepted Answer

A) 0.75 s 
B) 1.3 s 
C) 1.8 s 
D) 5.3 s 
E) 7.3 s 
A) 0.75 s 
B) 1.3 s 
C) 1.8 s 
D) 5.3 s 
E) 7.3 s

Question 9

A ball is in free fall motion.Upward is taken to be the positive direction.The displacement of the ball is:

Accepted Answer

A) positive during both ascent and descent 
B) negative during both ascent and descent 
C) negative during ascent and positive during descent 
D) positive during ascent and negative during descent 
E) none of the above 
A) positive during both ascent and descent 
B) negative during both ascent and descent 
C) negative during ascent and positive during descent 
D) positive during ascent and negative during descent 
E) none of the above

Question 10

An object is dropped from rest.Which of the five following graphs correctly represents its motion? The positive direction is taken to be upward.Take careful note of the axes.

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 11

A feather, initially at rest, is released in a vacuum 12 m above the surface of the Earth.Which of the following statements is correct?

Accepted Answer

A) The maximum velocity of the feather is 9.8 m/s 
B) The acceleration of the feather decreases until terminal velocity is reached 
C) The acceleration of the feather remains constant during the fall 
D) The acceleration of the feather increases during the fall 
E) The acceleration of the feather is zero 
A) The maximum velocity of the feather is 9.8 m/s 
B) The acceleration of the feather decreases until terminal velocity is reached 
C) The acceleration of the feather remains constant during the fall 
D) The acceleration of the feather increases during the fall 
E) The acceleration of the feather is zero

Question 12

A baseball is hit straight up and is caught by the catcher 2.0 s later, at the same height at which it left the bat.The maximum height of the ball during this interval is:

Accepted Answer

A) 4.9 m 
B) 7.4 m 
C) 12.4 m 
D) 19.6 m 
E) 38.8 m 
A) 4.9 m 
B) 7.4 m 
C) 12.4 m 
D) 19.6 m 
E) 38.8 m

Question 13

Can an object have positive acceleration and decreasing speed?

Accepted Answer

A) No, this is not possible. 
B) Yes, speed will always decrease if acceleration is positive. 
C) Yes, this is possible if the initial velocity is zero. 
D) Yes, this is possible if the initial velocity is negative. 
E) Yes, this is possible but only if the object is moving in two dimensions. 
A) No, this is not possible. 
B) Yes, speed will always decrease if acceleration is positive. 
C) Yes, this is possible if the initial velocity is zero. 
D) Yes, this is possible if the initial velocity is negative. 
E) Yes, this is possible but only if the object is moving in two dimensions.

Question 14

The average speed of a moving object during a given interval of time is always:

Accepted Answer

A) the magnitude of its average velocity over the interval 
B) the distance covered during the time interval divided by the time interval 
C) one-half its speed at the end of the interval 
D) its acceleration multiplied by the time interval 
E) one-half its acceleration multiplied by the time interval. 
A) the magnitude of its average velocity over the interval 
B) the distance covered during the time interval divided by the time interval 
C) one-half its speed at the end of the interval 
D) its acceleration multiplied by the time interval 
E) one-half its acceleration multiplied by the time interval.

Question 15

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt2, where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

Accepted Answer

A) bt3 
B) bt3/3 
C) 4bt2 
D) 3bt2 
E) bt3/2  
A) bt3 
B) bt3/3 
C) 4bt2 
D) 3bt2 
E) bt3/2

Question 16

Each of four particles moves along an x axis.Their coordinates (in meters)as functions of time (in seconds)are given by   
Which of these particles have constant acceleration?

Accepted Answer

A) All four 
B) Only 1 and 2 
C) Only 2 and 3 
D) Only 3 and 4 
E) None of them 
A) All four 
B) Only 1 and 2 
C) Only 2 and 3 
D) Only 3 and 4 
E) None of them

Question 17

At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest.The truck travels at constant velocity and the car accelerates at 3 m/s2.How much time does the car take to catch up to the truck?

Accepted Answer

A) 5 s 
B) 10 s 
C) 15 s 
D) 20 s 
E) 25 s 
A) 5 s 
B) 10 s 
C) 15 s 
D) 20 s 
E) 25 s

Question 18

A stone is dropped from a cliff.The graph (carefully note the axes)that best represents its motion while it falls is:

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 19

A car moving with an initial velocity of 25 m/s north has a constant acceleration of 3 m/s2 south.After 6 seconds its velocity will be:

Accepted Answer

A) 7 m/s north 
B) 7 m/s south 
C) 43 m/s north 
D) 20 m/s north 
E) 20 m/s south 
A) 7 m/s north 
B) 7 m/s south 
C) 43 m/s north 
D) 20 m/s north 
E) 20 m/s south

Question 20

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in a negative displacement?

Accepted Answer

A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = -4m, x f = -2m 
E) xi = -4m, x f = 4m 
A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = -4m, x f = -2m 
E) xi = -4m, x f = 4m

Exam 2: Motion Along a Straight Line

Neglecting the effect of air resistance, a stone dropped off a 175-m high building lands on the ground in:

Which of the following five coordinate versus time graphs represents the motion of an object whose speed is increasing?

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s2 for t in seconds.It stops at t =

If you drop a rock and a feather, the rock hits the ground first.This demonstrates that:

The diagram shows a velocity-time graph for a car moving in a straight line.At point Q the car must be:

A car starts from rest and goes down a slope with a constant acceleration of 5 m/s2.After 5 seconds the car reaches the bottom of the hill.What is its speed at the bottom of the hill?

The coordinate of a particle in meters is given by x(t)= 16t - 3.0t3, where the time t is in seconds.The particle is momentarily at rest at t =

A ball is in free fall motion.Upward is taken to be the positive direction.The displacement of the ball is:

An object is dropped from rest.Which of the five following graphs correctly represents its motion? The positive direction is taken to be upward.Take careful note of the axes.

A feather, initially at rest, is released in a vacuum 12 m above the surface of the Earth.Which of the following statements is correct?

A baseball is hit straight up and is caught by the catcher 2.0 s later, at the same height at which it left the bat.The maximum height of the ball during this interval is:

Can an object have positive acceleration and decreasing speed?

The average speed of a moving object during a given interval of time is always:

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt2, where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

Each of four particles moves along an x axis.Their coordinates (in meters)as functions of time (in seconds)are given by Which of these particles have constant acceleration?

At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest.The truck travels at constant velocity and the car accelerates at 3 m/s2.How much time does the car take to catch up to the truck?

A stone is dropped from a cliff.The graph (carefully note the axes)that best represents its motion while it falls is:

A car moving with an initial velocity of 25 m/s north has a constant acceleration of 3 m/s2 south.After 6 seconds its velocity will be:

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in a negative displacement?

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A particle moves along the x axis from x_i to x_f.Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?

At time t = 0 a car has a velocity of 16 m/s.It slows down with an acceleration given by a = -0.50t, in m/s² for t in seconds.It stops at t =

A car starts from rest and goes down a slope with a constant acceleration of 5 m/s².After 5 seconds the car reaches the bottom of the hill.What is its speed at the bottom of the hill?

The coordinate of a particle in meters is given by x(t)= 16t - 3.0t³, where the time t is in seconds.The particle is momentarily at rest at t =

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given by v = bt², where b is a constant.The expression for the distance traveled by this car from its position at t = 0 is:

At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest.The truck travels at constant velocity and the car accelerates at 3 m/s².How much time does the car take to catch up to the truck?

A car moving with an initial velocity of 25 m/s north has a constant acceleration of 3 m/s² south.After 6 seconds its velocity will be:

A particle moves along the x axis from x_i to x_f.Of the following values of the initial and final coordinates, which results in a negative displacement?