Garrard Acader
KE and GPE exam qu
Q1.
The figure below shows a toy car in different positions on a racing track.
Racing track
Tick (✓) one
one
Toy car-
B
(a)
The toy car and racing track can be modelled as a closed system.
Why can the toy car and racing track be considered 'a closed system'?
box.
The racing track and the car both have gravitational
potential energy.
The racing track and the car are always in contact with
each other.
The total energy of the racing track and the car is
constant.