_________ is a push or a pull that makes something move.
force
How can a tennis player get the ball to move farther?
He has to hit the ball harder.
What is this?
a banjo
Is this attract or repel?
repel
Is this attract or repel?
attract
How fast something moves is called ___________.
speed
What is an object that attracts metals?
magnet
_____________ is to move back and forth very fast.
vibrate