A driver is driving his car along a road as shown in Fig. 2.3. The driver makes sure that the speed-o-meter reads exactly 40 km/h. We can say that

The average speed is 40 km/h throughout the motion

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The average velocity is 40 km/h throughout the motion

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The average speed is 80 km/h throughout the motion

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The average velocity is 80 km/h throughout the motion

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Solution

The correct option is A The average speed is 40 km/h throughout the motion
Since the speed-o-meter of the car reads exactly 40 km/h speed. This means that speed of the car remains constant always. Thus, average speed of the car from P to Q remains constant (i.e. 40 km/h) throughout the motion.

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A driver is driving his car along a road as shown in Fig. 2.3. The driver makes sure that the speed-o-meter reads exactly 40 km/h. We can say that

The correct option is A The average speed is 40 km/h throughout the motionSince the speed-o-meter of the car reads exactly 40 km/h speed. This means that speed of the car remains constant always. Thus, average speed of the car from P to Q remains constant (i.e. 40 km/h) throughout the motion.

The correct option is A The average speed is 40 km/h throughout the motion
Since the speed-o-meter of the car reads exactly 40 km/h speed. This means that speed of the car remains constant always. Thus, average speed of the car from P to Q remains constant (i.e. 40 km/h) throughout the motion.