Question

A body falls from height of 500 m. In how much time will it strike the ground ?

Answer 1

Answer:

u=0(because object at start is at rest)

h=500m

t=?

h=ut+1/2gt2

500=0×t+1/2×10×t2

500=5×t2

100=t2

10s=t or

t=10s

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Answer 2

Answer:

Let acceleration = 10m/s^2

Distance is 500m

Initial velocity 0m/s

S= ut+1/2at^2

500= 0+1/2 ×10 (t)^2

(t)^2 = 500/5

= 100m

t= 10 sec

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Explanation: