Question

two spheres each of mass M each moving with velocity U moving in different directions at 30 degree south of East and 30 degree north of East respectively colloid at point O and stick to each other the velocity of the combination later becomes what ​

Answer 1

Answer:

f= sin tita using that formula we can find that

Answer 2

Answer:

√3U in East

Explanation:

Resolve the velocity of first sphere in East and South directions, it will become U*cos(30) East and U*sin(30) South.

Resolve the velocity of second sphere in East and North directions, it will become U*cos(30) East and U*sin(30) North.

The velocities in North and South directions will cancel each other and the velocities in East direction will add up after collision.

Now the velocity of the combined system will become 2*U*cos(30) = 2*U*(√3/2) = √3U East

(This is possible because mass of both the sphere is same and they stick to each other after collision implying coefficient of elasticity e=0.)