Question

Body travelling along a straight line transferred one third of the total distance with velocity 4 metre per second the remaining part of the distance was covered with a velocity of 2 metre per second for half the time and with the process is metre per second for the other half of time what is the average velocity over the whole motion?

Answer 1

Answer:

A body travelling along a straight line traversed one third of the total distance with a velocity 4ms−1 . The remaining part of the distance was covered with a velocity 2ms−1 for the other half of time .

Answer 2

Answer:

4 ms^ (-1)

Explanation:

Let (s) be the total distance travelled by body. If t1 is the time taken to over first one thirdd

distance, then t1=s/34=s12

Let t−2 be the time for each of the remaining two journeys. Then

2s3=2t2+6t2=8t−2

or t2=2s2×8=s12

Average velocity →taldistance→taltime

= s/( t-1 + 2 t_2) = s/( 9 s//12) = 2 ( s// 12) = 4 ms^(-1)`.

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