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Grade: 11

                        

abal is dropped from a height of 16m and rebund to 9m.if contact time is 0.2 sec. find acc.

4 years ago

Answers : (1)

Vikas TU
12158 Points
							
Writing the eqn. for ball we get,
16 = 0 + 0.5gt^2
t = root(32/g) s.= 1.788 s
v = 0 + 10*1.78 = 17.8 m/s (final velocity)
 
After rebounding,
0^2 = 17.8^2 – 2*(a-g)*9
solve for a. 
 
4 years ago
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