PH-2307

Conservation of energy

Physics · Secondary 4 · Hard · Conservation of energy

A 0.20 kg trolley is released from rest at the top of a smooth ramp. Its gravitational potential energy decreases by

1.6\,\text{J}

as it reaches the bottom.

Assuming no energy loss, what is its speed at the bottom?

Use conservation of energy and

E_k = \tfrac{1}{2}mv^2

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