posted by Jacky .
A cart starts from position 4 (which is 20m above ground) in the figure below with a velocity of 11 m/s to the left. Find the speed with which the cart reaches positions 1, 2, and 3. Neglect friction.
speed at position 1 m/s?
speed at position 2 m/s?
speed at position 3 m/s?
position 3 is 10m
position 2 is 15m
position 1 is 0m or ground level
Honestly i don't even know how to begin?