Worksheet: The WorkβEnergy Principle for a Variable Force

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 meters,
find the change in the bodyβs kinetic energy between
and .

A
J

B
J

C
J

D
J

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 meters,
find the change in the bodyβs kinetic energy between
and .

A
J

B
J

C2.25 J

D
J

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 meters,
find the change in the bodyβs kinetic energy between
and .