Force & Motion

Front

A _____________________ must be exerted on an object at rest to cause it to move.

Back

force

Front

What happens at the highest point of a jump?

Back

Gravity starts to pull him back down.

Front

Why does a rolling ball stop?

Back

Friction

Front

If these boys are pulling with the same amount of force, what will happen?

Back

They will not move at all.

Front

Why is person B having a hard time moving down the hill?

Back

Person B has more friction than person A.

Front

The two boys are not moving - are the forces balanced or unbalanced?

Back

balanced

Front

Which speed is the fastest? Options: 25 km/hr, 38 km/hr, 72 km/hr, 95 km/hr

Back

95 km/hr

Front

What is a PUSH or PULL of an object?

Back

Force

Front

What is one way to reduce friction?

Back

Put a slippery substance between the surfaces.

Front

Which of these would increase the speed of a skateboard on a half pipe? Options: Make it less steep., Put a back pack on the rider., Make the ramp as slick as possible., Begin skateboarding from the middle of the ramp.

Back

Make the ramp as slick as possible.