In a contest, two tractors pull two identical blocks of stone the same distance over identical surfaces. However, block A is moving twice as fast as block B when it crosses the finish line. Which statement is correct?
A) Block A has twice as much kinetic energy as block B.
B) Block B has lost twice as much kinetic energy to friction as block A.
C) Block B has lost twice as much kinetic energy as block A.
D) Both blocks have had equal losses of energy to friction.
E) No energy is lost to friction because the ground has no displacement.

Question

Quizplus · Accepted Answer

The Answer of In a contest, two tractors pull two identical blocks of stone the same distance over identical surfaces. However, block A is moving twice as fast as block B when it crosses the finish line. Which statement is correct?
A) Block A has twice as much kinetic energy as block B.
B) Block B has lost twice as much kinetic energy to friction as block A.
C) Block B has lost twice as much kinetic energy as block A.
D) Both blocks have had equal losses of energy to friction.
E) No energy is lost to friction because the ground has no displacement.

In a Contest, Two Tractors Pull Two Identical Blocks of Stone