PH-1668

Acceleration

Physics · Secondary 4 · Hard · Acceleration

A 2.0 kg ball is dropped from rest from a balcony and accelerates downwards at a constant rate of

3.0\,\text{m/s}^2

. It takes

2.5\,\text{s}

to reach the ground.

Using the equation of motion

v = u + at

, what is the speed of the ball just before it hits the ground?

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