When a cricket ball is thrown vertically upward
the ball? How much time it takes to reach the highest point?
unrown vertically upwards, it reaches a maximum height of 5 m. What is the initial speed of the ball.how much time it takes to reach the highest point
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v=0m/s
h=5m
g=9.8m/s^2
(a) v^2=u^2+2gh
0^2=u^2+2(-9.8×5)
0=u^2-2×49
0=u^2-98
98=u^2
√98=u
9.8m/s=u
(b) v=u+gt
0=9.8+9.8t
-9.8=9.8t
-9.8÷9.8=t
1s=t
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