A body covers half the distance with a speed of 20 m/
s and the other half with a speed of 30 m/s. The
average speed of the body during the whole
journey is :
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Answer:
Step-by-step explanation:
formula of that situation is 2×v1×v2/v1+v2
2×20×30/30+20 =120/50
=12/5=2.4 m/s
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