The resistance to motion of an automobile depend on road friction which is almost independant of its speed v and on aerodynamic drag whic is propotional to v squareFor a particular 12000N car The total resistant Force F is given by F=300+1.8v^2 here F isin newton and v is in meter .Calculate the powerrequired from the motorto acccelerate the car at 0.92m persecond square when the speed is 80kmperhour.????

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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