A particle is projected from a point P (2, 0, 0)m with a velocity 10 m/s making an angle 45º with the horizontal. The line PQ which makes an angle of 37º with positive x-axis lies in the plane of the projectile, xy plane is vertical. The coordinates of the point where the particle will strike the line PQ is: (Take g = 10 m/s²)

1. (4.5, 15/8, 0)
2. (8,6,0)
3. (10,8,0)
4. (6,10,0)

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.

11

21

31

41