Sliding

This task is about identifying the forces at work on a slide.
girls on a slide.jpg
In the playground Moana and Julie were taking turns on the slide.  Although Julie and Moana are the same weight, Julie always managed to go down faster than Moana.

Question 2Change answer

a)  What could be two possible reasons that explain why Julie went faster?     
1.
2.

Question 2Change answer

b)  What force causes the girls to slide down?  
 
c)  What force slows the girls down?