A motor vehicle travelled the first third of a distance s at a speed of V_(1)=10 kmph,the second third at a speed of V_(2)=20 kmph and the last third at a sped of V_(3)=60 kmph. Determine the mean speed of the vehicle over the entire distance s.

A motor vehicle travelled the first third of a distance s at a speed o

1.	A motor vehicle travelled the first third of a distance s at a speed of V_(1)=10 kmph,the second third at a speed of V_(2)=20 kmph and the last third at a sped of V_(3)=60 kmph. Determine the mean speed of the vehicle over the entire distance s.
Answer» 15 kmph 12kmph 10 kmph 18 kmph Answer :D

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A motor vehicle travelled the first third of a distance s at a speed of V_(1)=10 kmph,the second third at a speed of V_(2)=20 kmph and the last third at a sped of V_(3)=60 kmph. Determine the mean speed of the vehicle over the entire distance s.

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