8. Two cars, P and Q, travel in the same direction on a long, straight section o

Question

8. Two cars, P and Q, travel in the same direction on a long, straight section of a highway. Car P passes car Q, and is adjacent to car Q at time t a. Suppos e that car P and car Q each move with constant speed. At time to, is the magnitude of velocity of car P greater than, less than, or equal to the magnitude of the the instantaneous instantaneous velocity of car Q? Explain. Suppose instead that car P is moving with constant speed but car Q is speeding up. At time o is the magnitude of the instantaneous velocity of car P greater than, less than, or equal to the magnitude of the instantaneous velocity of car Q? Explain. b.

Explanation / Answer

a) instantaneous velocity means velocity at that moment.

From the data it is clear that P is over taking Q ( constant velocity means no the same velocity)

Hence car P velocity is greater than Q velocity

B) even in this case also car P has greater instantaneous velocity

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