a person travel from point a to b with speed of 40kmph.what should be his return speed(i.e from b to a) so that the average speed becomes 80kmph?
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A person travels from point a to b in a speed of 40 Km/hr.
if he returns he should have a speed,lets name it v. so if the avg.speed,should be equal to 80 km/hr.then we need to apply the formula for avg.speed. so , 40 + v /2 = 80.
the speed required to return with a avg. velocity 80km/h is 120 km/hr.
hope this helps.!
if he returns he should have a speed,lets name it v. so if the avg.speed,should be equal to 80 km/hr.then we need to apply the formula for avg.speed. so , 40 + v /2 = 80.
the speed required to return with a avg. velocity 80km/h is 120 km/hr.
hope this helps.!
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