A thief in stolen car crashes through a police checkpost at top speed of 90 kmph. A motorcycle cop, reacting after 2 sec, accelerates from rest at 5m/s².His top spd is 108 kmph.

Find max. separation between theif and police?

a)112.5m b)115m c)116.5m d)None above

Also plz. explain me how to solve these kind of problems when we have to find separation, top speed etc.

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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