A car is moving towards south with a speed of 20 m/s. A motorcyclist is moving towards east with speed of 15 ms–1. At certain instant, the motorcyclist is due south of the car and is at a distance of 50 m from the car. Then time after which they are closest is —(Answer Choices are a) 1/3 s b) 8/3 s c) 1/5 s d) 8/5 s )

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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