Galileo was punished by the Church for
teaching that the sun is stationary and the
earth moves around it. His opponents held the
view that the earth is stationary and the sun
moves around it. If the absolute motion has
no meaning, are the two viewpoints not
equally correct or equally wrong? Can we take the help of another celstial body to answer this question?

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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