A ball thrown vertically upward reaches a height of 80 m. Calculate :
(a) the time to reach the highest point
(b) the speed of the ball upon arrival on the ground.
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Answer:
4s
Explanation:
H=u²/2g
80 =u²/2g
u = 40 m/s
Time of ascent = u/g
= 40/10
=4s
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