Question

A ball of mass 80g is thrown vertically upwards with a velocity of 20m/s
calculate
1)the max height, from the height which the ball is thrown
2) the total time of flight from the point it is released and caught at the same point.(assume g=10 ms-2)
2) 2 sec up and 2 sec down

1) ave vel = 10 m/s

10 m/s * 2 s = ?

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