A ball is released from rest from the roof of a building and falls before striking…

PHYSICS · Subjective · CBSE · Physics · Gravitation · Gravitation

Problem

A ball is released from rest from the roof of a building and falls

78.4\,\text{m}

before striking the ground. With downward taken as positive, determine its speed just before impact. Use

g = 9.8\,\text{m/s}^2

.

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