A particle is projected from a horizontal floor with speed `10 m//s` at an angle `30^(@)` with the floor and striking the floor after sometime. State which is correct.

A particle is projected from the surface of the earth with a speed of 20 m* s^(-1) at an angle 30^@ with the horizontal . The time of flight of that particle is

A particle is projected from the surface of the earth with a speed of 20 m* s^(-1) at an angle 30^@ with the horizontal . The range of that particle is

A particle is projected with speed 10 m//s at angle 60^(@) with the horizontal. Then the time after which its speed becomes half of initial.

A particle is projected with speed 10 m//s at angle 60^(@) with the horizontal. Then the time after which its speed becomes half of initial.

A ball is projected from a point on the floor wilth a speed of 15 m/s at an angle of 60^0 with the horizontal. Will ilt hit a vertical wall 5 m away from the point of projection and perpendiculaer to the plane of projection without and perpendicular to the plane of projection without hitting the floor? will the answer differ if the wall is 22 m away?

A ball is projected from a point on the floor wilth a speed of 15 m/s at an angle of 60^0 with the horizontal. Will ilt hit a vertical wall 5 m away from the point of projection and perpendiculaer to the plane of projection without and perpendicular to the plane of projection without hitting the floor? will the answer differ if the wall is 22 m away?

A ball is projected from the floor of a cabin of height 7m with speed 20 m/s at an angle of 37^(@) with the floor of cabin. It makes a successive collision with the wall of cabin and then return again to its floor. Assume all collisions are perfectly elastic. Find time taken (in sec) by the ball to reach the floor after collisions with the ceiling of cabin.

A ball is projected from the floor of a cabin of height 7m with speed 20 m/s at an angle of 37^(@) with the floor of cabin. It makes a successive collision with the wall of cabin and then return again to its floor. Assume all collisions are perfectly elastic. Find time taken (in sec) by the ball to reach the floor after collisions with the ceiling of cabin.

A particle strikes a horizontal smooth floor with a velocity a making an angle theta with the floor and rebounds with velocity v making an angle phi with the floor. If the coefficient of restitution between the particle and the floor is e , then