Physics force question Q (20)

2007-09-12 10:54 pm

1) Use the Newton's third law of motion together with a diagram of the action reaction pair(s) to explain each situation:
a) A person with ordinary shoes is able to work on a sidewalk
b) A rocket accelerates in the vaccum of outer space

回答 (1)

天同

2007-09-14 5:03 am

✔ 最佳答案

(a) Action - acted backward on the road surface given by the person
Reaction - acted forward on the person (at the shoes) given by the road surface.
(b) action - acted backward on the exhausted gas given by the rocket
reaction - acted forward on the rocket given by the exhausted gas

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