1. (a) Is acceleration directly proportional to force, or is it inversely proportional to force? Give an example. (b) Is acceleration directly proportional to mass, or is it inversely proportional to...

1. (a) Is acceleration directly proportional to force, or is it inversely proportional to force? Give an example.

(b) Is acceleration directly proportional to mass, or is it inversely proportional to mass? Give an example.

2. What is Newton’s second law of motion?