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A frog leaping upward off his lily pad is pulled downward by gravity and lands on another lily pad instead of continuing on in a straight line

1

as the fuel in a rocket ignites the force of the gas expansion and explosion pushes out the back of the rocket and pushes the rocker forward.

3

when you are standing up in a subway train and the train suddenly stops your body continues to go forward

1

a pitched baseball goes faster than one that is gently thrown

2

A swimmer pushes water back with her arms but her body moves foward.

3

As an ice skater pushes harder with his leg he begins to move faster

2

When bobby age 5 and his dad are skipping pebbles on the pond the pebbles that bobbys dad throws go father and faster than his

2

When you paddle a canoe the canoe goes foward.

3

A little girl who has been pulling a sled behind her in the snow is crying because when she stopped to tie on her hat the sled kept moving and hit her in the back of her legs.

1