The photograph shows a boy sliding down a pole at a park.
He noticed that when he wore gloves on his hands, he slid down the pole faster.
Which statement explains why he slid down faster when he was wearing gloves?
A class made sliders by gluing coins onto materials they want to test.
They want to find out which materials have the least friction.
How will the children decide which slider has the least friction?
What else could affect the speed at which the sliders slide?
Which force acts against gravity to slow down a child going down the slide?