Q54 of 139 Page 21

Which of the following could not be a unit of acceleration?

A. km/s2


B. cm s2


C. km/s


D. m/ s2

a = v/t = distance / s2

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52

Which of the following could not be a unit of speed?

A. km/h B. s/m


C. m/s D. mm s-1

 53

One of the following is not a vector quantity. This one is :

A. displacement B. speed


C. acceleration D. velocity

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A body is moving along a circular path of a radius R. What will be the distance travelled and displacement of the body when it completes a revolution?

 56

If on a round trip you travel 12 km and then arrive back home:

(a) What distance have you travelled?


(b) What is your final displacement?