a car travels from A to B in 10 seconds with a speed of 54 km per hour and returns in 5 seconds find the average speed also find the average velocity of the whole journey
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average speed = total diatance/total time
distance from a to b = vt = 54 kmph × 10 s = 150 m
avg speed = 150×2 / (10+5) = 20 m/s = 72 kmph
avg velocity = total diaplacement / time = 0
since displacement is zero
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distance from a to b = vt = 54 kmph × 10 s = 150 m
avg speed = 150×2 / (10+5) = 20 m/s = 72 kmph
avg velocity = total diaplacement / time = 0
since displacement is zero
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