A student is riding the school bus. The bus stops as the driver applies the brakes. Which of these best describes this situation?%0D%0A%0D%0A a%0D%0AA force is changing the motion of the bus.%0D%0A b%0D%0AThe school bus does not lose or gain kinetic energy.%0D%0A c%0D%0AThe bus is gaining energy because of friction.%0D%0A d%0D%0AThere is no force acting on the busy, so it stops moving.
The best answer would be:
a) A force is changing the motion of the bus.