A train is targated to run from Delhi to Pune at an average speed of 80 kph but due to repairs of track looses 3 hrs in the first part of the journey. If then accelerates at a rate of 20 kph2 till the speed reaches 100 kph. Its speed is now maintained till the end of the journey. If the train now reaches station in time, find the distance (in km) from when it has started acceleration.

previously answered by akash goyal but anwer is not 2200 km it is 840 km

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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