A group of rioting students throw rotten eggs at some passing politicians. Two eggs of equal mass are thrown with equal velocity. Egg B hits the soft padded shoulders of a politician's suit but egg A misses and hits the building wall behind them instead. Compare the work done on the eggs in reducing their velocities to zero.
A)More work was done on A than on B.
B)More work was done on B than on A.
C)The amount of work is the same for both.
D)It is meaningless to compare the amount of work because the forces were so different.
E)Work was done on B, but no work was done on A because the wall did not move.

Question

Quizplus · Accepted Answer

The work done on both eggs is the same because they both come to a stop, meaning their kinetic energy is reduced to zero. The initial kinetic energy of both eggs is the same, so the work done to stop them is also the same.

A Group of Rioting Students Throw Rotten Eggs at Some