1. A cart load of sand is
pulled 5 m across the
ground with a force of
300N. How much work
is done in pulling the
load?
2. A force of 25N is used
to slide a 150 N sofa,
5 m across a floor. How
much work is done on
the sofa?
3. Suppose you lift a 3kg book
from the table onto a shelf 2m
high.
a. what force you apply to move
the book at constant velocity.
b. what work is done by this
force?
1. An 80kg man is
jogging at a rate of
4m/s. He has kinetic
energy. Calculate it:
2. You serve a volleyball
with a mass of 2.1 Kg. The
ball leaves your hand
with a speed of 30m/s.
What is the kinetic energy
of the ball?
3. A car is traveling with
a velocity of 40 m/s and
has a mass of 1120 Kg.
Calculate
the
car’s
kinetic energy.
PERFORMANCE TASK:
WRITE
3
SAMPLE
PROBLEMS
ABOUT
WORK DONE WITH
SOLUTIONS
PERFORMANCE TASK:
WRITE
3
SAMPLE
PROBLEMS
ABOUT
KINETIC ENERGY WITH
SOLUTIONS.