A balloon of mass 100 kg is stationary at a height of 100 m above the ground. A man is standing on a rope ladder hanging from the bottom of the balloon. As the man of 50 kg wt climbs up with speed of 0.3 m s^-1 relative to the rope, the balloon.

A) Remains stationery B) Moves downward with a speed of 0.3 m s^-1

B) Moves upward with the speed of 0.3 m s^-1 D) Moves down ward with a speed of 0.1 m s^-1.

pls solve this problem.............

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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