Asked by chimatiro
A tennis ball is dropped on to the floor from a height of 10 m. It rebounds to a
height of 2.5 m. If the ball is in contact with the floor for 0.01 seconds, what is
the average acceleration during the contact?
height of 2.5 m. If the ball is in contact with the floor for 0.01 seconds, what is
the average acceleration during the contact?
Answers
Answered by
bobpursley
You have initial PE, so solve for velocity at floor. Then, you know PE at 2.5m, so you know initial rebound velocity.
acceleration= (Vrebound-Vinitial)/time remembering that Vrebound is exactly the opposite direction of Vinitialcontact....so they add.
acceleration= (Vrebound-Vinitial)/time remembering that Vrebound is exactly the opposite direction of Vinitialcontact....so they add.
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