Question

Two spheres of masses 4 kg and 8 kg are accelereted at
7 m/s2 and 5 m/s2 respectively. In this case which of the
following alternative is correct?

Answer 1

Answer:

5.66m/s²

Explanation:

 

Away from each other so opposite velocities.

Now taking second sphere as positive velocity,

we have Vcm= m1v1+m2v2

——–————

m1 +m2

= 5.66 m/s²

 positive so towards the second sphere.