Physics Easy 10 points ?

1. A swimmer exerts a force on a boat and the boat exerts a reaction force on the swimmer this is an example of Newton's.

A. First law

B. Second law

C. Third law



2. A girl runs twice around a circular track 25 m in radius. At the end of the run, her displacement from her original position is

A. 25 m

B. 157 m

C. 314 m

D. 0 m



3. The base SI unit of mass is ?

A. milligram

B. gram

C. kilogram

D. slug

E. newton