Somebody please find the relationship between v1 and v2 using constraint relation in string assuming the wedge shifts X distance towards left.

I'm confused, its answer is v1=v2.and i'm getting

X-Xcostheta-Xcostheta-y=0, where y is the distance moved by block wrt wedge and

Where v2 is the velociety of block wrt wedge

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

11

21

31

41