Question

a body is projected vertically upward with velocity 98 metre per second after 2 seconds if the acceleration due to gravity of it disappears the velocity of a body at the end of next three second series​

Answer 1

Explanation:

Velocity after 2sec will be v=u−gt=98−9.8(2)=78.4m/s

As after t=2sec the retardation due to gravity disappear so the velocity will not change further so velocity

at t=3sec will also be 78.4m/s

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