2. Kinetic Energy and Potential Energy
• Kinetic Energy is the energy of motion. An
object that has motion-whether it is vertical or
horizontal motion-has kinetic energy.
• Potential Energy: An object can store energy
as the result of its position.
3. Hypothesis
• What happens to the two balls (basket ball
and tennis ball) when they are dropped on the
ground with a tennis ball on top of the basket
ball?
• May be both will fall to the ground at the
same time.
• The experiment is conducted to see what
happens when the two balls are dropped.
4. Experiment
• Carefully put the tennis ball on top of the
basket ball, holding one hand under the
basket ball and the other on top of the tennis
ball.
• Let go both the balls at the same time and
observe what happens.
5. This is what will happen
• When we drop the balls at the same time, the tennis
ball should bounce off the basket ball and fly high
into the air. The two balls hit each other just after
they hit the ground, a lot of kinetic energy from the
big ball is transferred through to the smaller tennis
ball, sending it high into the air.
• While you held the balls in the air before dropping
them they had another type of energy called
potential energy, the balls gained this through the
effort it took you lift the balls up, it is interesting to
note that energy is never lost, only transferred into
other kinds of energy.
6. Conclusion
Tennis ball and basket ball will not just fall on
the ground. Instead the small ball goes high up
in the air. This shows that energy is transferred
between objects.
