4. You are walking at a leisurely pace of .75 m/s when you hear the train coming and start running to catch it. Over the next 10 seconds, you speed up to 3.5 m/s and catch your train! What was your acceleration over that time?

Suppose the acceleration of the particle moving gin a circle of radius “r” with the uniform speed “v” is proportional to some power of “r , say and some power of “v” say “”.

Determine the powers of “r” and “v”.

Explanation:

what is the question?

the correct choice is a .

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