1.

A boy is standing on the edge of the roof at height of 78.4 m. He throws a ball vertically upwards with velocity of 19.6 ms−1. After how much time the ball will reach the ground? (Take g=9.8 ms−2)

Answer»

A boy is standing on the edge of the roof at height of 78.4 m. He throws a ball vertically upwards with velocity of 19.6 ms1. After how much time the ball will reach the ground? (Take g=9.8 ms2)




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