6. A ball is thrown down vertically with an initial speed of 20 m/s from a height of 60 m. Find (a) its speed just before it strikes the ground and (b) how long it takes for the ball to reach the ground. Repeat (a) and (b) for the ball thrown directly up from the same height and with the same initial speed.
6. A ball is thrown down vertically with an initial speed of 20 m/s from a height of 60 m. Find (a) its speed just before it strikes the ground and (b) how long it takes for the ball to reach the ground. Repeat (a) and (b) for the ball thrown directly up from the same height and with the same initial speed.
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Transcribed Image Text:6. A ball is thrown down vertically with an initial speed of 20 m/s from a height of 60
m. Find (a) its speed just before it strikes the ground and (b) how long it takes for
the ball to reach the ground. Repeat (a) and (b) for the ball thrown directly up from
the same height and with the same initial speed.
Take g
10 m/s?.
%3D
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