Question

A particle is projected vertically upward from a point at a height of 40m from the ground at 1 = 0. It reaches a maximum height of 20m from the point of projection. The particle touches the ground at 1 =7 sec! The magnitude of its displacement in the time interval Y=0 to = sec is a) 40 m b) 80 m C160 m d) 20 m​

Answer 1

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