HC VERMA Chapter-3 Volume-1 Q.42

I know the solution to the question. But the problem is that horizontal range for the projectile should be x=60cm and vertical height y=30cm. The answer will be different this way. When x=40cm and y=20cm then the answer comes. Why is horizontal range=40cm and vertical range=20cm?

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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