Question

a body moves from P to Q with an average speed of 30 km per hour and 8 hours back to pee with an average speed of 60 km per hour then the average speed and average velocity of the object for the whole journey will be​

Answer 1

Answer:

45km/h

Step-by-step explanation:

$average \: speed = \: \frac{sum \: of \: the \: speeds\: }{no. \: of \: journeys}$

$average \: speed = \frac{30 + 60}{2}$

$average \: speed \: = \frac{90}{2}$

$average \: speed \: = 45 km ph$

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