against force height
distance gravitational pull longer
downhill gravity steeper
faster



The 1._______ of the ramp directly affected the 2._______ travelled by the toy car. The 3._______ and higher the position of the ramp, the 4._______ the car went down because of the stronger 5.______ acting on the toy car. It travelled a 6._______ distance compared to when the car came from a lower position or height.

Have you experienced riding a bicycle in going up a hill or mountain? It is easy or difficult to pedal uphill? You find it difficult to go upward because you are going 7._______ gravity. Since 8.______ is pulling you down, you need to exert more 9._______ to move uphill and overcome gravity. But when you go 10.______,it will be easy to speed up since gravity is pulling you down. You don't need to exert a lot of force a pedal because the wheels of the bicycle will roll by itself because it is pulled by gravity.​