A small toy school bus rear-ends a big toy school bus initially at rest. The big

Question

A small toy school bus rear-ends a big toy school bus initially at rest. The bigger bus is several times heavier than the smaller one. Which of the following statements are true if the collision is elastic?

True / False / Maybe

                                                      True                                                                               False                                                                               Maybe                                              The two busses continue together at the same speed.
                                                      True                                                                               False                                                                               Maybe                                              Mechanical energy is conserved.
                                                      True                                                                               False                                                                               Maybe                                              The small bus exerts the same amount of force on the big bus as vice versa.
                                                      True                                                                               False                                                                               Maybe                                              Momentum is conserved.
                                                      True                                                                               False                                                                               Maybe                                              The small bus will go backwards.

Explanation / Answer

true

true

false

true

false

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