Question

a body covers first one by three part of its journey with a velocity 2 metre per second next one by three part of the velocity 3 metre per second and the rest of the journey with a velocity of 6 metre per second the average velocity ​

Answer 1

Let the total distance be 3s

so:-

For First Part of journey:-

Distance = s

speed = 2 m/sec

Time = distance/speed = s/2 seconds

$\rule{200}{2}$

For Second Part of Journey:-

Distance = s

speed = 3 m/sec

Time = s/3 seconds

$\rule{200}{2}$

For Third Part of Journey:-

Distance= s

Speed = 6 m/sec

Time = s/6 seconds

$\rule{200}{2}$

Total Time will be :-

$=\dfrac{s}{2}+\dfrac{s}{3}+\dfrac{s}{6}\\ \\ \\=\dfrac{6s}{6}=s\:seconds$

$\rule{200}{2}$

Total Distance = 3s metre

Total time = s seconds

Average Velocity  = distance /Time =3 m/sec

Answer 2

Answer:

3m/s

Explanation:

***See the attachment ***