a ball is thrown up and reaches maximum height 20m find its initial velocity
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here, the displacement is 20m/s
final velocity=0m/s
acceleration due to gravity is -10m/s
so we apply the formula,
v²=u²+2aS
0=u²+2(-10)20
therefore u=20m/s
final velocity=0m/s
acceleration due to gravity is -10m/s
so we apply the formula,
v²=u²+2aS
0=u²+2(-10)20
therefore u=20m/s
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