Question

An object is observed to fall from a bridge, striking the water below .50 s later. with what velocity did it strike the water?

Answer 1

initial velocity, u = 0

time taken for fall = 0.5 sec

acceleration, g = 10 m/s^2

final velocity, v= u + gt = 0 + 10×0.5 = 5 m/s

The object strikes the water at 5m/s

Answer 2

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initial velocity, u = 0

time taken for fall = 0.5 sec

acceleration, g = 10 m/s^2

final velocity, v= u + gt = 0 + 10×0.5 = 5 m/s

The object strikes the water at 5m/s