A particle of mass 2 kg moves with an initial velocity of (4i+2j)m/s on the x-y plane . A force of F=2i-3j N acts on particle. The initial position of particle is (2m,3m). Then for y=3m

• possible value of x is only x=2m
• Possible value of x is not only x=2m but there exists some other value of x also
• Time taken is 2s
• All of these

provide me some explanation

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.

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