Physics Easy 10 points ?

2016-07-31 4:59 pm
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

回答 (1)

2016-07-31 8:22 pm
✔ 最佳答案
1. C. Third law

2. D. 0 m (How far is she from where she started?)

3. C. kilogram
Also called the MKS system for "meter, kilogram, second."

Hope this helps!


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