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a ball is thrown upwards.it returns back to the earth in 8seconds.its location after 5 seconds is

a ball is thrown upwards.it returns back to the earth in 8seconds.its location after 5 seconds is
 

Grade:12

1 Answers

Arun
25750 Points
5 years ago
Ball reached max height in 4sec
so, in 5sec ball travelled for 1sec after reaching max height
which gives u=0
t=1sec. s=?
Again s=ut + 1/2gt2 ( + sign because ball is coming down)
s=0 + 1/2(9.8)(1x 1)
s=4.9 m
 
 

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