Question

A motor vehicle travelled the first third of a distance s at a speed v1 = 10kmph, second third at a speed of v2 = 20kmph and the last third at a speed of v3 = 60kmph. Determine the mean of the vehicle over the entire distance s.​

Answer 1

Answer:

To complete 1km distance with speed =50kmhr it tkes time t

1

=

50

1

s

To complete 1km distance with speed =40kmhr it tkes time t

1

=

40

1

Average speed=

(1/50)+(1/40)

1+1

=44.44m/s

Answer 2

Explanation:

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