Quiz about Forces

Question 1

A car has a mass of 10 kg. It decelerates at a rate of 3.4 m/s². What force was applied to the car?

Accepted Answer

34 N

Answer

2.94 m/s2

Answer

34 m/s

Answer

29.4 kg

Question 2

What is the WEIGHT (in Newtons) of a 12.75 kg toddler on Earth?

Accepted Answer

124.95 N

Answer

124.95 kg

Answer

124.95 lbs

Question 3

What is the MASS of a large cow on Earth that has a weight of 4578 Newtons?

Accepted Answer

467.14 kg

Answer

423.34 kg

Answer

521.34 kg

Answer

384.89 kg

Question 4

An astronaut is standing on the surface of the planet Mars. She has a mass of 60 kg and has a weight of 225 Newtons while on Mars. What is the ACCELERATION DUE TO GRAVITY on Mars?

Accepted Answer

3.75 m/s2

Answer

4.25 m/s2

Answer

3.70 m/s2

Answer

3.44 m/s2

Question 5

Mass is defined as...

Accepted Answer

a measure of the amount of matter ("stuff") in an object

Answer

a measure of gravitational force exerted on an object

Answer

a measure of the amount of space an object occupies

Answer

a measure of the rate of change in the velocity over time

Question 6

Weight is defined as...

Accepted Answer

a measure of gravitational force exerted on an object

Answer

a measure of the amount of matter ("stuff") in an object

Answer

a measure of the amount of space an object occupies

Answer

a measure of the rate of change in the velocity over time

Question 7

Which of the following is NOT related to an object's mass?

Accepted Answer

How much space the object takes up

Answer

How many atoms an object is made of

Answer

How much matter is inside of an object

Answer

How much inertia an object has

Question 8

The correct equation for momentum is....

Accepted Answer

p = mv

Answer

p=m/v

Answer

p=m2v

Answer

p= m/2v

Question 9

Which of the following statements best describes the Law of Conservation of Momentum?

Accepted Answer

The total momentum of a system before a collision is equal to the total momentum of the system after the collision.

Answer

An object in motion stays in motion.

Answer

Every force has an equal and opposite force.

Answer

A force applied onto an object will accelerate.

Question 10

Which of the following situations is the best example of the Law of Conservation of Momentum?

Accepted Answer

One hockey player colliding with another.

Answer

A ball flying through the air

Answer

A woman standing on an elevator that is not moving

Answer

A car moving south on I-94 at 67 mph

Question 11

A ball has a velocity of 5 m/s and a mass of 10 kg. What is the momentum of the ball?

Accepted Answer

50 kg m/s

Answer

2 kg m/s

Answer

0.5 kg m/s

Answer

0 kg m/s

Question 12

A 2 stage rocket is blasting off into space. Once the solid fuel containers are empty the containers will detach from the rocket. If the rocket had a momentum of 25,000 kg m/s before the solid fuel containers detached and a momentum of 20,000 kg m/s after the solid fuel containers detached. How much momentum do the solid fuel containers have after detaching from the rocket?

Accepted Answer

5,000 kg m/s

Answer

45,000 kg m/s

Answer

25,000 kg m/s

Question 13

Two billiard (pool) balls hit each other. Before the collision the first ball has a momentum of 4.5 kg m/s and the second ball is at rest. If the first ball has a momentum of 1.5 kg m/s after the collision what is the momentum of the second ball after the collision?

Accepted Answer

3 kg m/s

Answer

6 kg m/s

Answer

1.5 kg m/s

Question 14

What is the value of "g" (acceleration due to gravity) here on earth?

Accepted Answer

9.8 m/s2

Answer

4.56 m/s2

Answer

8.91 m/s2

Answer

10 m/s2

Question 15

If we dropped a 45 N ball and a 90 N ball off of the school at the same time from the same height which one would hit the ground first? (Ignore Air Resistance)

Accepted Answer

Both will hit at the same time

Answer

45 N ball

Answer

90 N ball

Answer

Not enough information to answer the question

Question 16

Terminal velocity occurs when:

Accepted Answer

the force of gravity is balanced by the air resistance on an object.

Answer

the air resistance on an object increases.

Answer

an object starts to slow down due to air resistance.

Answer

the acceleration due to gravity equals zero.

Question 17

A metal ball bearing breaks free from an airplane and free falls for 6.82 seconds. If it never reaches terminal velocity, what is its approximate final velocity after 6.82 seconds?

Accepted Answer

66.84 m/s

Answer

62.8 m/s

Answer

68.2 m/s

Answer

Not enough information

Question 18

The two spheres in the illustration below were dropped at the exact same time and are falling through the Earth's atmosphere. Sphere A, because of its size, reaches terminal velocity, while Sphere B doesn't reach terminal velocity. Which sphere will hit the ground first?

Accepted Answer

Sphere B

Answer

Sphere A

Answer

Neither

Forces

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science