Question
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.
(i) the time taken by the ball to reach the ground.
(ii) the velocity with which the ball strikes the ground.
Answers
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
0=20+0*t-4.8t^2
solve for t.
vf=vi+9.8t, using t from above, solve for vf