4. A picnic basket falls out of a hot air balloon that is traveling horizontally at 14 m/s. The hot air balloon is at an altitude of 250 m. Where does the picnic basket land relative to where it was
dropped from?

Mary concludes that the foam rubber balls’ acceleration during the collision was THE SAME AS the steel balls’ acceleration. She concludes that the collision between the foam rubber balls is an ELASTIC collision.

The masses of the two objects are the same therefore its acceleration would also become the same. It is an elastic collision because little or less friction occurred in the situation creating kinetic energy.