Force and motion — true or false?

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A body in motion stays in motion unless a force acts on it.

2. Statement is true

   Yes

   Statement

   Friction opposes motion between two surfaces in contact.

3. Statement is true

   No

   Statement

   Mass and weight are the same physical quantity.

4. Statement is true

   Yes

   Statement

   Weight changes with location; mass does not.