Forces and Motion Worksheet

Name: ________ Date: ______

Directions: Answer the following questions by choosing the best answer.

1. What is the force that opposes motion called? a. Friction b. Gravity c. Inertia d. Velocity

2. What is the formula for calculating speed? a. Speed = distance x time b. Speed = time x distance c. Speed = force x mass d. Speed = acceleration x time

3. What is the unit of measurement for force? a. Meters b. Kilograms c. Newtons d. Joules

4. What is the force that pulls objects towards the center of the Earth called? a. Friction b. Gravity c. Inertia d. Velocity

5. What is the formula for calculating force? a. Force = mass x acceleration b. Force = acceleration x mass c. Force = distance x time d. Force = time x distance

6. What is the unit of measurement for speed? a. Meters per second b. Kilograms per meter c. Newtons per second d. Joules per meter

7. What is the force that opposes the motion of objects through air called? a. Friction b. Gravity c. Inertia d. Air resistance

8. What is the formula for calculating acceleration? a. Acceleration = force x mass b. Acceleration = mass x force c. Acceleration = distance x time d. Acceleration = time x distance

9. What is the unit of measurement for acceleration? a. Meters per second b. Kilograms per meter c. Newtons per second d. Meters per second squared

10. What is the force that keeps objects in motion called? a. Friction b. Gravity c. Inertia d. Velocity

Practice Problems:

1. A car travels 200 meters in 20 seconds. What is the speed of the car? Answer: 10 meters per second

2. A force of 50 Newtons is applied to an object with a mass of 10 kilograms. What is the acceleration of the object? Answer: 5 meters per second squared

3. An object with a mass of 5 kilograms is moving at a speed of 10 meters per second. What is the kinetic energy of the object? Answer: 250 Joules

4. A ball is thrown with a force of 20 Newtons. If the ball has a mass of 2 kilograms, what is the acceleration of the ball? Answer: 10 meters per second squared

5. An object is moving at a speed of 5 meters per second. If the force of friction is 2 Newtons, what is the net force acting on the object? Answer: 3 Newtons

Answer Key:

1. a
2. a
3. c
4. b
5. a
6. a
7. d
8. d
9. d
10. c

Practice Problems:

1. 10 meters per second
2. 5 meters per second squared
3. 250 Joules
4. 10 meters per second squared
5. 3 Newtons