Question

Find The height ,If a body fall freely and reach the ground in 5 sec?( g=10 m/sec square)​

Answer 1

Answer:

as the body is falling freely therefore its initial velocity =0

time=5sec

a=10m/s^2

s=?

By newtons 2nd equation of motion

s=ut+1÷2at^2

=0×5+1÷2×10×5×5

=0+125

=125

therefore height is 25m

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Answer 2

u=0

t=5sec

as we know

s=ut+(1/2)gt^2

s=(1/2)*10*25

s=125m