Question 1

If a freely falling object were equipped with a speedometer, its speed reading would increase each second by about

Accepted Answer

A) 5 m/s. 
B) 10 m/s. 
C) 15 m/s. 
D) a variable amount. 
E) depends on its initial speed 
A) 5 m/s. 
B) 10 m/s. 
C) 15 m/s. 
D) a variable amount. 
E) depends on its initial speed

Question 2

An object falls freely from rest on a planet where the acceleration due to gravity is twice as much as on Earth. In the first 5 seconds it falls a distance of

Accepted Answer

A) 100 m. 
B) 150 m. 
C) 250 m. 
D) 500 m. 
E) none of the above 
A) 100 m. 
B) 150 m. 
C) 250 m. 
D) 500 m. 
E) none of the above

Question 3

When you walk at an average speed of 4 m/s, in 5 s you'll cover a distance of

Accepted Answer

A) 2 m. 
B) 10 m. 
C) 15 m. 
D) 20 m. 
A) 2 m. 
B) 10 m. 
C) 15 m. 
D) 20 m.

Question 4

A cart maintains a constant velocity of 100 m/s for 10 seconds. During this interval its acceleration is

Accepted Answer

A) zero. 
B) 1 m/s2. 
C) 10 m/s2. 
D) none of the above 
A) zero. 
B) 1 m/s2. 
C) 10 m/s2. 
D) none of the above

Question 5

A river 100 m wide flows 1 m/s due south. A boat that travels 1 m/s relative to the water is pointed due east as it crosses from the west bank. Relative to its starting point, the boat travels

Accepted Answer

A) nowhere. 
B) 100 m. 
C) 141 m. 
D) 200 m. 
E) more than 200 m. 
A) nowhere. 
B) 100 m. 
C) 141 m. 
D) 200 m. 
E) more than 200 m.

Question 6

The time it takes a car to attain a speed of 30 m/s when accelerating from rest at 2 m/s2 is

Accepted Answer

A) 2 s. 
B) 15 s. 
C) 30 s. 
D) 60 s. 
E) none of the above 
A) 2 s. 
B) 15 s. 
C) 30 s. 
D) 60 s. 
E) none of the above

Question 7

While a car travels around a circular track at a constant speed, its

Accepted Answer

A) acceleration is zero. 
B) velocity is zero. 
C) inertia is zero. 
D) none of the above 
A) acceleration is zero. 
B) velocity is zero. 
C) inertia is zero. 
D) none of the above

Question 8

Katelyn runs along the aisle of a train that moves at 8 m/s. Her speed relative to the floor is 3 m/s. Her speed relative to an observer at rest on the ground is

Accepted Answer

A) 5 m/s. 
B) 11 m/s. 
C) either depending on her running direction 
D) none of the above 
A) 5 m/s. 
B) 11 m/s. 
C) either depending on her running direction 
D) none of the above

Question 9

A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the same direction has a speed of

Accepted Answer

A) 0 m/s. 
B) 3 m/s. 
C) 4 m/s. 
D) 6 m/s. 
A) 0 m/s. 
B) 3 m/s. 
C) 4 m/s. 
D) 6 m/s.

Question 10

The speedometer of an automobile reads

Accepted Answer

A) average speed. 
B) instantaneous speed. 
C) accelerated speed. 
A) average speed. 
B) instantaneous speed. 
C) accelerated speed.

Question 11

An object falls freely from rest on a planet where the acceleration due to gravity is 20 m/s2. After 5 seconds, the object will have a speed of

Accepted Answer

A) 5 m/s. 
B) 10 m/s. 
C) 20 m/s. 
D) 50 m/s. 
E) 100 m/s. 
A) 5 m/s. 
B) 10 m/s. 
C) 20 m/s. 
D) 50 m/s. 
E) 100 m/s.

Question 12

One half second after starting from rest, a freely falling object will have a speed of about

Accepted Answer

A) 2 m/s. 
B) 5 m/s. 
C) 10 m/s. 
D) 20 m/s. 
E) none of the above 
A) 2 m/s. 
B) 5 m/s. 
C) 10 m/s. 
D) 20 m/s. 
E) none of the above

Question 13

If a stone falls to the bottom of a mineshaft in 6 seconds, then the depth of the shaft is about

Accepted Answer

A) 60 m. 
B) 120 m. 
C) 180 m. 
D) more than 200 m. 
A) 60 m. 
B) 120 m. 
C) 180 m. 
D) more than 200 m.

Question 14

If a rocket initially at rest accelerates at a rate of 50 m/s2 for one minute, its speed will be

Accepted Answer

A) 50 m/s. 
B) 500 m/s. 
C) 3000 m/s. 
D) 3600 m/s. 
A) 50 m/s. 
B) 500 m/s. 
C) 3000 m/s. 
D) 3600 m/s.

Question 15

Neglecting air resistance, how fast must you toss a ball straight up in order for it to take 6 seconds to return to its initial level?

Accepted Answer

A) 5 m/s 
B) 10 m/s 
C) 20 m/s 
D) 30 m/s 
E) more than 30 m/s 
A) 5 m/s 
B) 10 m/s 
C) 20 m/s 
D) 30 m/s 
E) more than 30 m/s

Exam 3: Linear Motion

If a freely falling object were equipped with a speedometer, its speed reading would increase each second by about

An object falls freely from rest on a planet where the acceleration due to gravity is twice as much as on Earth. In the first 5 seconds it falls a distance of

When you walk at an average speed of 4 m/s, in 5 s you'll cover a distance of

A cart maintains a constant velocity of 100 m/s for 10 seconds. During this interval its acceleration is

A river 100 m wide flows 1 m/s due south. A boat that travels 1 m/s relative to the water is pointed due east as it crosses from the west bank. Relative to its starting point, the boat travels

The time it takes a car to attain a speed of 30 m/s when accelerating from rest at 2 m/s2 is

While a car travels around a circular track at a constant speed, its

Katelyn runs along the aisle of a train that moves at 8 m/s. Her speed relative to the floor is 3 m/s. Her speed relative to an observer at rest on the ground is

A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the same direction has a speed of

The speedometer of an automobile reads

An object falls freely from rest on a planet where the acceleration due to gravity is 20 m/s2. After 5 seconds, the object will have a speed of

One half second after starting from rest, a freely falling object will have a speed of about

If a stone falls to the bottom of a mineshaft in 6 seconds, then the depth of the shaft is about

If a rocket initially at rest accelerates at a rate of 50 m/s2 for one minute, its speed will be

Neglecting air resistance, how fast must you toss a ball straight up in order for it to take 6 seconds to return to its initial level?

About Science

Newtons First Law of Motion: Inertia

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The time it takes a car to attain a speed of 30 m/s when accelerating from rest at 2 m/s² is

An object falls freely from rest on a planet where the acceleration due to gravity is 20 m/s². After 5 seconds, the object will have a speed of

If a rocket initially at rest accelerates at a rate of 50 m/s² for one minute, its speed will be