A ball thrown vertically upwards with a speed of 19.6ms-1 from the top of a tower return to the earth in 6s.find the height of the tower.
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Niteshyadav916640:
your most welcome
at first I forget to divide by 2
sorry for my mistake
it's ok
can you tell in detail
I can tell you next day
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Tomorrow is my test of mathematics
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i think u have to use the derived formula for maximum height
Answered by
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if it return at earth that means final velocity will be 0
so
u = 19.6
v=0
a = (-g)
v2 = u2 + 2as
0 = 19.6 ×19.6 - 2 × 9.8 × h
h = 19.6 m
hope it helps
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