a particle is describing uniform circular motion in the anti clockwise sense such that its time period of revolution is T. at t=0 the particle is observed to be at A. if ?1 be the angle between acceleration at t= T/4 and average velocity in the time interval 0 - T/4 and ?2 be the angle b/w acceleration at t= T/4 and the change in velocity in the time interval 0-T/4, then the value of ?1 and ?2 are?

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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