Question

A ball is formed vertically upper with a velocity ma km/s find 1.maximum height it rises 2.total time it takes to return on earth

Answer 1

Answer:

Given ,

u = x km/s

  = 60x m/s

v = 0

a = -g = 10 m/s²

t = v-u / a

 = u/a

 = 60x / 10

 = 6x

Hmax = u² / 2g

          = (60x)² / 20

          = 180x²

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