forces can change motion

a force is a ____.

• push only

• pull only

• push or pull of an object

Forces that are equal in the size and cancel each other are called _______ forces.

• gravity

• balanced

• unbalanced

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You enjoy sliding down fast on a slide because there is _____.

• big friction on the surface

• little friction on the surface

• no gravity

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the force that pulls down a falling apple from a tree is ________.

• push force

• gravity

• large force

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you need a big force to push a ______ table.

• light

• heavy

• small

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the forces in the picture are ______.

• unbalanced

• balanced

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friction is always pushing in the ______ direction of the motion.

• same

• opposite

• up

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the forces are _______.

• balanced

• equal

• unbalanced

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when the car moves at the same speed for 5 minutes, all forces acting on it are _______.

• balanced

• un balanced

• small

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unbalanced forces are ______ .

• equal

• not equal

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