A body is thrown vertically upward from a point ‘A’ 125m above the ground. It goes up to a maximum height of 250 m above…..

Q. A body is thrown vertically upward from a point ‘A’ 125m above the ground. It goes up to a maximum height of 250 m above the ground and passes through ‘A’ on its downward journey. The velocity of the body when it is at a height of 70m above the ground is (g = 10 m/s2)

(a) 20 m/s

(b) 50 m/s

(c) 60 m/s

(d) 80 m/s

Ans:(c)
Sol:
\displaystyle v^2 = 0 + 2g(250-70)
v = 60m/s

Author: Rajesh Jha

QuantumStudy.com

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