True or false on power and collisions

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Power is the rate of doing work.

2. Statement is true

   No

   Statement

   Average power ignores the time taken.

3. Statement is true

   Yes

   Statement

   Elastic collisions conserve kinetic energy.

4. Statement is true

   No

   Statement

   Stuck-together bodies are elastic.

5. Statement is true

   Yes

   Statement

   Inelastic collisions are the common case.

6. Statement is true

   No

   Statement

   Instantaneous power uses a long interval.

Instructions

Decide whether each statement is true or false.

Explanation