Forces and Motion Worksheet

1. _____________________ - a push or pull, which may cause a change in an object’s motion.

• force

• mass

• energy

• velocity

forces that cancel each other out because they are equal in size and opposite in direction.

• balanced forces

• unbalanced forces

• gravitational forces

• frictional forces

3. _____________________ - a force that acts between two touching objects and that opposes motion.

• friction

• gravity

• magnetism

• electricity

4. _____________________ - the force of attraction between objects, such as the attraction between Earth and objects on it.

• gravity

• friction

• magnetism

• electricity

forces that cause a change in an object’s motion because they don’t cancel each other out

• unbalanced forces

• balanced forces

• gravitational forces

• frictional forces

6. What is the formula for speed?

• Speed = Distance / Time

• Speed = Time / Distance

• Speed = Distance x Time

• Speed = Distance + Time

7. If a car travels 160 kilometers in 4 hours, what is the speed of the car? (remember to label)

• 40 km/h

• 50 km/h

• 60 km/h

• 70 km/h

Forces can cause objects to do 4 things. One of them is to stop. What are the other 3 things?

• Move, change direction, change shape

• Move, accelerate, change color

• Change temperature, change size, change state

• Vibrate, rotate, change mass

What is Newton’s 1st Law of Motion?

• An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• Force equals mass times acceleration.

• For every action, there is an equal and opposite reaction.

• Energy cannot be created or destroyed, only transformed.

A teacher pulls 4 objects with the same amount of force. A pencil, a desk, a chair, and a book. Which of the object's motion will have the greatest effect when the teacher pulls them?

• Pencil

• Desk

• Chair

• Book