Reading the theorem

Exercise and reference answers

Questions

1. Question

   The work-energy theorem relates work to a change in

   Choices

   1. potential energy
   2. kinetic energy
   3. momentum

   Correct choice

   kinetic energy

2. Question

   The work in question is done by

   Choices

   1. gravity only
   2. friction only
   3. the net force

   Correct choice

   the net force

3. Question

   For a conservative force, work round a closed path is

   Choices

   1. zero
   2. maximum
   3. negative

   Correct choice

   zero

4. Question

   A potential energy function can be defined for

   Choices

   1. any force
   2. a conservative force
   3. friction

   Correct choice

   a conservative force

Explanation