a car travells from stop A to stop B with a speed of 30 km h-1 and than returns back to A with the speed of 50 km h-1. find (1) displacement of the car. (2) distance travelled by the car. (3) average speed of the car
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no time is specified?
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1)displacement is zero.
2)distance travelled is 2ab.
3)the average speed is37. 5m/s.
2)distance travelled is 2ab.
3)the average speed is37. 5m/s.
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