Question 1

The figure shows the position of a car (black circles)at one second intervals.What is the acceleration at the time t = 4 s?

Accepted Answer

A) -2 m/s2 
B) -1 m/s2 
C) 0 
D) 1 m/s2 
E) 2 m/s2

Question 2

A car starts with a speed of 50 m/s and goes a distance of 1000 m in 10.0 s.What is its average acceleration?

Accepted Answer

A) 10 m/s2 
B) 1.40 m/s2 
C) 2.00 m/s2 
D) 98.6 m/s2 
E) 3.50 m/s2

Question 3

In this graph of distance vs.time,which of the following is true (chose one)?

Accepted Answer

A) The speed is negative. 
B) The velocity is negative. 
C) The velocity is positive. 
D) The acceleration is negative. 
E) The acceleration is positive.

Question 4

In the classic book by Jules Verne,Phileas Fogg travels around the world in 80 days.Leaving London,heading east,and arriving back in London 80 days later from the west.If the radius of the Earth is 6.38 x 106 m (for this problem,treat London as being on the equator),find the average speed of Mr.Fogg.

Accepted Answer

A) zero 
B) 0.92 m/s 
C) 5.8 m/s 
D) More information is needed.

Question 5

A fellow student found in the performance data of his new car the velocity-versus-time graph shown in the figure.The average acceleration of his car from second 0 to second 24 is

Accepted Answer

A) 5 m/s2. 
B) 2.5 m/s2. 
C) 0 m/s2. 
D) -2.5 m/s2. 
E) -5 m/s2.

Question 6

A football player is standing on the 10 yard line.He runs forward to the 40 yard line and then runs backwards to the 30 yard line.What is the distance that he has traveled and what is his displacement?

Accepted Answer

A) distance = 20 yards,displacement = 20 yards forward 
B) distance = 20 yards,displacement = 30 yards forward 
C) distance = 30 yards,displacement = 30 yards forward 
D) distance = 40 yards,displacement = 20 yards forward 
E) distance = 40 yards,displacement = 40 yards forward

Question 7

A ball is thrown directly down from the top of a building with a speed of 12 m/s,and it lands on the ground with a velocity 3 times the initial velocity.How high is the building (in meters)?

Accepted Answer

A) 12 
B) 59 
C) 234 
D) 4320 
E) 8760

Question 8

A 747 commercial jet liner moves down a runway at a constant acceleration,starting from rest and reaching the take-off speed of 285 km/hr after travelling 3400 m down the runway.The acceleration of the jet on the runway is

Accepted Answer

A) 0.0233 m/s2. 
B) 0.00248 m/s2. 
C) 9.81 m/s2. 
D) 1.84 m/s2. 
E) 0.922 m/s2.

Question 9

The distance between Sarnia and London Ontario,Canada is about 100 km.You cover first 50 km at 40 km/h.In order for you to travel with an average speed of 50 km/h for the entire trip,the speed to cover the second 50 km would be

Accepted Answer

A) 50 km/h. 
B) 67 km/h. 
C) 78 km/h. 
D) 100 km/h.

Question 10

One of the following statements is false.Which one is it?

Accepted Answer

A) The size of the displacement and the distance travelled can be the same. 
B) The size of the displacement and the distance travelled can be different from each other. 
C) If a car only travels in a straight line without turning,the size of the displacement and the distance travelled are the same. 
D) The size of the displacement can be greater than the distance traveled. 
E) The size of the displacement is always less than or equal to the distance traveled.

Question 11

A rock is dropped off of a building,reaching a constant speed of 37 m/s after 4 s.What is the rock's acceleration after 5 seconds?

Accepted Answer

A) 9.8 m/s2 
B) 12.3 m/s2 
C) 0 m/s2 
D) 9.3 m/s2 
E) 4.4 m/s2

Question 12

In the classic book by Jules Verne,Phileas Fogg travels around the world in 80 days.Leaving London,heading east,and arriving back in London 80 days later from the west.If the radius of the Earth is 6.38 x 106 m (for this problem,treat London as being on the equator),find the average velocity of Mr.Fogg.

Accepted Answer

A) zero 
B) 0.92 m/s 
C) 5.8 m/s 
D) More information is needed.

Question 13

If you drop an object from the top of a high building,how long does it take for the object to reach a speed of 100 km/h?

Accepted Answer

A) 0.124 s 
B) 2.83 s 
C) 5.11 s 
D) 9.81 s 
E) 12.3 s

Question 14

The velocity of a car is given as  m/s where  m/s3,  m/s2,and  m/s.What is its acceleration at  s?

Accepted Answer

A) 15 m/s2 
B) 18 m/s2 
C) 20 m/s2 
D) 32 m/s2

Question 15

The position of a particle as a function of time along the x-axis is given by x = ((5 m)+ (12 m/s)t - (4 m/s2)t2 ).What is the speed of the particle when its position is x = 14 m?

Accepted Answer

A) 0 m/s 
B) 5 m/s 
C) 12 m/s 
D) 24 m/s 
E) 60 m/s

Question 16

The graph shown is of velocity versus time.Approximately when is the acceleration zero?

Accepted Answer

A) Near t = 50 s. 
B) Near t = 10 s. 
C) Near t = 20 s. 
D) The acceleration is never zero. 
E) Near t= 100 s.

Question 17

A helicopter lifts off at a constant acceleration of 2.3 m/s2 upward.What is the height of the helicopter 2.5 s after liftoff?

Accepted Answer

A) 6.6 m 
B) 7.2 m 
C) 13 m 
D) 14 m

Question 18

A bullet is fired through a board,8.00 cm thick,with its line of motion perpendicular to the face of the board.If it enters with a speed of 300 m/s and emerges with a speed of 100 m/s,the bullet's acceleration as it passes through the board is

Accepted Answer

A) -200,000 m/s2. 
B) -300,000 m/s2. 
C) -400,000 m/s2. 
D) -500,000 m/s2. 
E) -600,000 m/s2.

Question 19

The driver of a car travels 150 miles to reach his destination.If he travels 60.0 mi/h for 100.0 miles and 55.0 mi/h for the remaining 50.0 miles,how long does it take for him to reach his destination?

Accepted Answer

A) 1.58 hours 
B) 2.45 hours 
C) 2.58 hours 
D) 3.67 hours

Question 20

A golf ball is dropped from a height of 1.0 m onto a concrete floor.The velocity of the ball immediately before hitting the floor is 4.43 m/s downward.The ball contacts the floor for 0.940 ms (check out R.Cross,Am.J.Phys.,Vol.67,No.3,March 1999)and leaves the floor traveling upward at 3.96 m/s.The average acceleration of the golf ball while it is in contact with the floor is

Accepted Answer

A) 9.81 m/s2. 
B) 8.93 * 103 m/s2. 
C) 500 m/s2. 
D) 4.71 * 103 m/s2. 
E) 4.21 * 103 m/s2.

Exam 2: Motion in a Straight Line

The figure shows the position of a car (black circles) at one second intervals.What is the acceleration at the time t = 4 s?

A car starts with a speed of 50 m/s and goes a distance of 1000 m in 10.0 s.What is its average acceleration?

In this graph of distance vs.time,which of the following is true (chose one) ?

A fellow student found in the performance data of his new car the velocity-versus-time graph shown in the figure.The average acceleration of his car from second 0 to second 24 is

A football player is standing on the 10 yard line.He runs forward to the 40 yard line and then runs backwards to the 30 yard line.What is the distance that he has traveled and what is his displacement?

A ball is thrown directly down from the top of a building with a speed of 12 m/s,and it lands on the ground with a velocity 3 times the initial velocity.How high is the building (in meters) ?

A 747 commercial jet liner moves down a runway at a constant acceleration,starting from rest and reaching the take-off speed of 285 km/hr after travelling 3400 m down the runway.The acceleration of the jet on the runway is

The distance between Sarnia and London Ontario,Canada is about 100 km.You cover first 50 km at 40 km/h.In order for you to travel with an average speed of 50 km/h for the entire trip,the speed to cover the second 50 km would be

One of the following statements is false.Which one is it?

A rock is dropped off of a building,reaching a constant speed of 37 m/s after 4 s.What is the rock's acceleration after 5 seconds?

If you drop an object from the top of a high building,how long does it take for the object to reach a speed of 100 km/h?

The velocity of a car is given as m/s where m/s³, m/s²,and m/s.What is its acceleration at s?

The position of a particle as a function of time along the x-axis is given by x = ((5 m) + (12 m/s) t - (4 m/s²) t² ) .What is the speed of the particle when its position is x = 14 m?

The graph shown is of velocity versus time.Approximately when is the acceleration zero?

A helicopter lifts off at a constant acceleration of 2.3 m/s² upward.What is the height of the helicopter 2.5 s after liftoff?

A bullet is fired through a board,8.00 cm thick,with its line of motion perpendicular to the face of the board.If it enters with a speed of 300 m/s and emerges with a speed of 100 m/s,the bullet's acceleration as it passes through the board is

The driver of a car travels 150 miles to reach his destination.If he travels 60.0 mi/h for 100.0 miles and 55.0 mi/h for the remaining 50.0 miles,how long does it take for him to reach his destination?

Exam 2: Motion in a Straight Line

The figure shows the position of a car (black circles) at one second intervals.What is the acceleration at the time t = 4 s?

A car starts with a speed of 50 m/s and goes a distance of 1000 m in 10.0 s.What is its average acceleration?

In this graph of distance vs.time,which of the following is true (chose one) ?

A fellow student found in the performance data of his new car the velocity-versus-time graph shown in the figure.The average acceleration of his car from second 0 to second 24 is

A football player is standing on the 10 yard line.He runs forward to the 40 yard line and then runs backwards to the 30 yard line.What is the distance that he has traveled and what is his displacement?

A ball is thrown directly down from the top of a building with a speed of 12 m/s,and it lands on the ground with a velocity 3 times the initial velocity.How high is the building (in meters) ?

A 747 commercial jet liner moves down a runway at a constant acceleration,starting from rest and reaching the take-off speed of 285 km/hr after travelling 3400 m down the runway.The acceleration of the jet on the runway is

The distance between Sarnia and London Ontario,Canada is about 100 km.You cover first 50 km at 40 km/h.In order for you to travel with an average speed of 50 km/h for the entire trip,the speed to cover the second 50 km would be

One of the following statements is false.Which one is it?

A rock is dropped off of a building,reaching a constant speed of 37 m/s after 4 s.What is the rock's acceleration after 5 seconds?

If you drop an object from the top of a high building,how long does it take for the object to reach a speed of 100 km/h?

The velocity of a car is given as m/s where m/s3, m/s2,and m/s.What is its acceleration at s?

The position of a particle as a function of time along the x-axis is given by x = ((5 m) + (12 m/s) t - (4 m/s2) t2 ) .What is the speed of the particle when its position is x = 14 m?

The graph shown is of velocity versus time.Approximately when is the acceleration zero?

A helicopter lifts off at a constant acceleration of 2.3 m/s2 upward.What is the height of the helicopter 2.5 s after liftoff?

A bullet is fired through a board,8.00 cm thick,with its line of motion perpendicular to the face of the board.If it enters with a speed of 300 m/s and emerges with a speed of 100 m/s,the bullet's acceleration as it passes through the board is

The driver of a car travels 150 miles to reach his destination.If he travels 60.0 mi/h for 100.0 miles and 55.0 mi/h for the remaining 50.0 miles,how long does it take for him to reach his destination?

The velocity of a car is given as m/s where m/s³, m/s²,and m/s.What is its acceleration at s?

The position of a particle as a function of time along the x-axis is given by x = ((5 m) + (12 m/s) t - (4 m/s²) t² ) .What is the speed of the particle when its position is x = 14 m?

A helicopter lifts off at a constant acceleration of 2.3 m/s² upward.What is the height of the helicopter 2.5 s after liftoff?