PC03 · Quiz — Work, Energy & Power

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Question 1

Work done by a force is zero when:

AThe force is maximum

BThe displacement is in the direction of force

CThe force is perpendicular to displacement

DThe body is accelerating

Question 2

The work-energy theorem states that:

AWork done = change in potential energy

BWork done = change in kinetic energy

CTotal mechanical energy is constant

DPower = work done per unit time

Question 3

The kinetic energy of a body is doubled when its velocity is multiplied by:

B√2

D½

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PC03 — Work, Energy & Power — Quiz