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lys-0071 [83]
3 years ago
9

A tennis ball bounces on the floor three times. If each time it loses 22.0% of its energy due to heating, how high does it rise

after the third bounce, provided we released it 2.3 m from the floor?
Physics
1 answer:
lesya692 [45]3 years ago
6 0

Answer:

H = 109.14 cm

Explanation:

given,                                                            

Assume ,                                                            

Total energy be equal to 1 unit                                

Balance of energy after first collision = 0.78 x 1 unit

                                                             = 0.78 unit

Balance after second collision = 0.78 ^2 unit

                                                   = 0.6084 unit

Balance after third collision = 0.78 ^3 unit

                                              = 0.475 unit

height achieved by the third collision will be equal to energy remained                                        

H be the height achieved after 3 collision

0.475 ( m g h) = m g H                  

H = 0.475 x h                                    

H = 0.475 x 2.3 m                          

H = 1.0914 m                      

H = 109.14 cm                      

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