In this worksheet, we will practice using the work--energy principle to solve problems involving a moving particle under the action of a variable force.

Q1:

The figure shows the action of a variable force
on a body of mass
kg
as it moves a distance . Given that
is measured in newtons,
and is measured in metres,
find the change in the bodyโs kinetic energy between
and .

Q2:

The figure shows the action of a variable force
on a body of mass
kg
as it moves a distance . Given that
is measured in newtons,
and is measured in metres,
find the change in the bodyโs kinetic energy between
and .

Q3:

The figure shows the action of a variable force
on a body of mass
kg
as it moves a distance . Given that
is measured in newtons,
and is measured in metres,
find the change in the bodyโs kinetic energy between
and .

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