When a single boxcar in the freight yard hooks onto a stationary string of four boxcars, as in example 7.4, there is some kinetic energy lost. Which of the following could account for the missing energy?
A) Sound energy in the loud CLANG when they hook together.
B) Heat energy in the clamping mechanism between cars as it opens and then captures the fifth boxcar.
C) Both A and B

Question

Quizplus · Accepted Answer

The missing energy during the collision can be accounted for by both sound energy produced by the loud clang and heat energy generated in the clamping mechanism as it operates to connect the cars.

When a Single Boxcar in the Freight Yard Hooks onto a Stationary