Force and Motion Review

Front

What is force?

Back

A push or pull on an object that can cause it to move, stop, or change direction.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is friction?

Back

A force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What is gravity?

Back

A force that pulls objects toward each other, such as the force that pulls objects toward the Earth.

Front

How do you calculate speed?

Back

Speed = Distance ÷ Time.

Front

If a car travels 60 meters in 3 seconds, what is its speed?

Back

Speed = 60 m ÷ 3 s = 20 m/s.

Front

What happens to the force of friction when the mass of an object increases?

Back

The force of friction increases because there is more mass.

Front

What is a balanced force?

Back

When two forces acting on an object are equal in size and opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

When two forces acting on an object are not equal, causing the object to accelerate in the direction of the greater force.

Front

What is a seesaw an example of?

Back

A lever, which is a simple machine that helps lift heavy objects.