True or false on work and energy

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Work and energy share the joule as unit.

2. Statement is true

   No

   Statement

   Power is a vector quantity.

3. Statement is true

   Yes

   Statement

   One watt is one joule per second.

4. Statement is true

   No

   Statement

   One horse-power is 646 watts.

5. Statement is true

   Yes

   Statement

   Inelastic collisions lose kinetic energy.

6. Statement is true

   No

   Statement

   A scalar product gives a vector.

Instructions

Decide whether each statement is true or false.

Explanation