Question 1

A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither.The time for this round trip is 2 hours.The magnitude of the average velocity of the car for this round trip is:

Accepted Answer

A) 0 km/hr 
B) 50 km/hr 
C) 100 km/hr 
D) 200 km/hr 
E) cannot be calculated without knowing the acceleration

Question 2

Which one of the following statements is correct for an object in free fall released from rest?

Accepted Answer

A) The average velocity during the first second of time is 4.9 m/s 
B) During each second the object falls 9.8 m 
C) The acceleration changes by 9.8 m/s every second 
D) The object falls 9.8 m during the first second of time 
E) The acceleration of the object is proportional to its weight

Question 3

Which of the following five coordinate versus time graphs represents the motion of an object moving with a constant nonzero speed?

Accepted Answer

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

Question 4

At a location where g = 9.80 m/s2, an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

Accepted Answer

A) 125 m 
B) 128 m 
C) 245 m 
D) 250 m 
E) 255 m

Question 5

Two automobiles are 150 kilometers apart and traveling toward each other.One automobile is moving at 60 km/h and the other is moving at 40 km/h.In how many hours will they meet?

Accepted Answer

A) 2.5 h 
B) 2.0 h 
C) 1.75 h 
D) 1.5 h 
E) 1.25 h

Question 6

A projectile is shot vertically upward with a given initial velocity.It reaches a maximum height of 100 m.If on a second shot the initial velocity is doubled, then the projectile will reach a maximum height of:

Accepted Answer

A) 70.7 m 
B) 141.4 m 
C) 200 m 
D) 241 m 
E) 400 m

Question 7

This graph shows the position of a particle as a function of time.What is its instantaneous velocity at t = 7s?

Accepted Answer

A) 3 m/s 
B) -3 m/s 
C) 12 m/s 
D) -12 m/s 
E) Need additional information.

Question 8

A stone is released from rest from the edge of a building roof 190 m above the ground.Neglecting air resistance, the speed of the stone, just before striking the ground, is:

Accepted Answer

A) 43 m/s 
B) 61 m/s 
C) 120 m/s 
D) 190 m/s 
E) 1400 m/s

Question 9

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s2 in the same direction as its initial velocity?

Accepted Answer

A) 12 m 
B) 14 m 
C) 24 m 
D) 36 m 
E) 48 m

Question 10

A particle moves on the x axis.When its acceleration is positive and increasing:

Accepted Answer

A) its velocity must be positive 
B) its velocity must be negative 
C) it must be slowing down 
D) it must be speeding up 
E) none of the above must be true

Question 11

Each of four particles moves along an x axis.Their coordinates (in meters)as functions of time (in seconds)are given by  For which of these particles is the velocity increasing for t > 0?

Accepted Answer

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

Question 12

The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

Accepted Answer

A) 5 m/s 
B) -5 m/s 
C) 11 m/s 
D) -11 m/s 
E) 1 m/s

Question 13

Starting at time t = 0, an object moves along a straight line.Its coordinate in meters is given by x(t)= 75t - 1.0t3, where t is in seconds.When it momentarily stops its acceleration is:

Accepted Answer

A) 0 m/s2 
B) -73 m/s2 
C) -30 m/s2 
D) -9.8 m/s2 
E) 9.2 x 103 m/s2

Question 14

A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration.The acceleration of the car is:

Accepted Answer

A) 1.3 m/s2 
B) 2.5 m/s2 
C) 4.9 m/s2 
D) 9.8 m/s2 
E) There is not enough information to answer this question.

Question 15

An object is thrown straight down with an initial speed of 4 m/s from a window which is 8 m above the ground.The time it takes the object to reach the ground is:

Accepted Answer

A) 0.80 s 
B) 0.93 s 
C) 1.3 s 
D) 1.7 s 
E) 2.0 s

Question 16

All falling objects experience some air resistance, the effect of which is to decrease acceleration.When the falling object's acceleration reaches zero, the acceleration stops changing.Therefore, if you drop an object and it falls far enough for this to happen,

Accepted Answer

A) its speed continues to increase all the way down. 
B) its speed reaches a maximum value and then decreases. 
C) its speed reaches a maximum value and then doesn't change. 
D) its speed reaches a maximum value, decreases, and then increases again. 
E) Any of these things could happen.

Question 17

As a rocket is accelerating vertically upward at 9.8 m/s2 near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

Accepted Answer

A) 9.8 m/s2 down 
B) 0 m/s2 
C) 9.8 m/s2 up 
D) 19.6 m/s2 up 
E) none of the above

Question 18

An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s2 west for 3 seconds.During this time the object travels a distance of:

Accepted Answer

A) 18 m 
B) 24 m 
C) 36 m 
D) 54 m 
E) 144 m

Question 19

The acceleration of an object, starting from rest, is shown in the graph below.Other than at t = 0, when is the velocity of the object equal to zero?

Accepted Answer

A) During the interval from 1.0 s to 3.0 s 
B) At t = 3.5 s 
C) At t = 4.0 s 
D) At t = 5.0 s 
E) At no other time less than or equal to 5 s.

Question 20

The diagram represents the straight line motion of a car.Which of the following statements is true?

Accepted Answer

A) The car's speed increases, then it stops, and reverses 
B) The car accelerates at 6 m/s2 for the first 2 s 
C) The car is moving for a total time of 12 s 
D) The car accelerates at -12 m/s2 for the last 4 s 
E) The car returns to its starting point when t = 9 s

Exam 2: Motion Along a Straight Line

A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither.The time for this round trip is 2 hours.The magnitude of the average velocity of the car for this round trip is:

Which one of the following statements is correct for an object in free fall released from rest?

Which of the following five coordinate versus time graphs represents the motion of an object moving with a constant nonzero speed?

At a location where g = 9.80 m/s², an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

Two automobiles are 150 kilometers apart and traveling toward each other.One automobile is moving at 60 km/h and the other is moving at 40 km/h.In how many hours will they meet?

A projectile is shot vertically upward with a given initial velocity.It reaches a maximum height of 100 m.If on a second shot the initial velocity is doubled, then the projectile will reach a maximum height of:

This graph shows the position of a particle as a function of time.What is its instantaneous velocity at t = 7s?

A stone is released from rest from the edge of a building roof 190 m above the ground.Neglecting air resistance, the speed of the stone, just before striking the ground, is:

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s² in the same direction as its initial velocity?

A particle moves on the x axis.When its acceleration is positive and increasing:

Each of four particles moves along an x axis.Their coordinates (in meters) as functions of time (in seconds) are given by For which of these particles is the velocity increasing for t > 0?

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

Starting at time t = 0, an object moves along a straight line.Its coordinate in meters is given by x(t) = 75t - 1.0t³, where t is in seconds.When it momentarily stops its acceleration is:

A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration.The acceleration of the car is:

An object is thrown straight down with an initial speed of 4 m/s from a window which is 8 m above the ground.The time it takes the object to reach the ground is:

All falling objects experience some air resistance, the effect of which is to decrease acceleration.When the falling object's acceleration reaches zero, the acceleration stops changing.Therefore, if you drop an object and it falls far enough for this to happen,

As a rocket is accelerating vertically upward at 9.8 m/s² near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s² west for 3 seconds.During this time the object travels a distance of:

The acceleration of an object, starting from rest, is shown in the graph below.Other than at t = 0, when is the velocity of the object equal to zero?

The diagram represents the straight line motion of a car.Which of the following statements is true?

Exam 2: Motion Along a Straight Line

A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither.The time for this round trip is 2 hours.The magnitude of the average velocity of the car for this round trip is:

Which one of the following statements is correct for an object in free fall released from rest?

Which of the following five coordinate versus time graphs represents the motion of an object moving with a constant nonzero speed?

At a location where g = 9.80 m/s2, an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

Two automobiles are 150 kilometers apart and traveling toward each other.One automobile is moving at 60 km/h and the other is moving at 40 km/h.In how many hours will they meet?

A projectile is shot vertically upward with a given initial velocity.It reaches a maximum height of 100 m.If on a second shot the initial velocity is doubled, then the projectile will reach a maximum height of:

This graph shows the position of a particle as a function of time.What is its instantaneous velocity at t = 7s?

A stone is released from rest from the edge of a building roof 190 m above the ground.Neglecting air resistance, the speed of the stone, just before striking the ground, is:

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s2 in the same direction as its initial velocity?

A particle moves on the x axis.When its acceleration is positive and increasing:

Each of four particles moves along an x axis.Their coordinates (in meters) as functions of time (in seconds) are given by For which of these particles is the velocity increasing for t > 0?

The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

Starting at time t = 0, an object moves along a straight line.Its coordinate in meters is given by x(t) = 75t - 1.0t3, where t is in seconds.When it momentarily stops its acceleration is:

A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration.The acceleration of the car is:

An object is thrown straight down with an initial speed of 4 m/s from a window which is 8 m above the ground.The time it takes the object to reach the ground is:

All falling objects experience some air resistance, the effect of which is to decrease acceleration.When the falling object's acceleration reaches zero, the acceleration stops changing.Therefore, if you drop an object and it falls far enough for this to happen,

As a rocket is accelerating vertically upward at 9.8 m/s2 near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s2 west for 3 seconds.During this time the object travels a distance of:

The acceleration of an object, starting from rest, is shown in the graph below.Other than at t = 0, when is the velocity of the object equal to zero?

The diagram represents the straight line motion of a car.Which of the following statements is true?

At a location where g = 9.80 m/s², an object is thrown vertically down with an initial speed of 1.00 m/s.After 5.00 s the object will have traveled:

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s² in the same direction as its initial velocity?

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:

Starting at time t = 0, an object moves along a straight line.Its coordinate in meters is given by x(t) = 75t - 1.0t³, where t is in seconds.When it momentarily stops its acceleration is:

As a rocket is accelerating vertically upward at 9.8 m/s² near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

An object with an initial velocity of 12 m/s west experiences a constant acceleration of 4 m/s² west for 3 seconds.During this time the object travels a distance of: