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enter image description hereCould someone please explain the trajectory of the ball that is bouncing in this picture:

The vertical component of the velocity of a bouncing ball is shown in the graph below (graph is very large). The positive Y direction is vertically up. The ball deforms slightly when it is in contact with the ground.

Im not sure what the ball is doing and when, what happens at 1s?

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Question for you: Suppose the ball was just falling under gravity indefinitely, never hitting the ground. What would the graph of its velocity look like? –  Rahul Nov 24 '12 at 15:54
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A straight line with slope -9.8 or -10. –  fosho Nov 24 '12 at 15:57
    
Considering that the velocity sharply increases after following a decreasing straight line with slope of -9 (falling under gravity) what do you think happens there? –  jheriko Nov 24 '12 at 16:01
1  
The ball hit the ground? –  fosho Nov 24 '12 at 16:02
    
I think? please help –  fosho Nov 24 '12 at 16:14

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