Asked by rahul thakur

1.A ball is dropped from the height of 20m.calculate
(i) the time taken by the ball to reach the ground.
(ii) the velocity with which the ball strikes the ground.

Answers

Answered by bobpursley
hf=hi+vi*t-4.8t^2
0=20+0*t-4.8t^2

solve for t.

vf=vi+9.8t, using t from above, solve for vf
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