A ball is projected inside a room of height 7m with a speed of 20m/s and at an angle 37^(@) with the horizontal If its collision with ceiling results in reversal of direction only of y- component of velocity T is minimum value of total time of flight (in sec) till it strikes floor then T=?

A stone is projected with speed 20 m//s at angle 37^(@) with the horizontal and it hits the ground with speed 12m//s due to air resistance. Assume the effect of air resistance to reduce only horizontal component of velocity. Then the time of flight will be-

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 is projected with a speed of 10 m/s at an angle 37^(@) with the vertical. Find (i) time of flight (ii) maximum height above ground (iii) horizontal range.

A particle is projected towards the north with speed 20 m//s at an angle 45^(@) with horizontal. Ball gets horizontal acceleration of 7.5 m//s^(2) towards east due to wind. Range of ball (in meter) will be

A ball is projected from a high tower with speed 20 m/s at an angle 30^@ with horizontal x-axis. The x-coordinate of the ball at the instant when the velocity of the ball becomes perpendicular to the velocity of projection will be (take point of projection as origin):

A particle is projected with speed 20m s^(-1) at an angle 30^@ With horizontal. After how much time the angle between velocity and acceleration will be 90^@

A boy throws a stone with a speed of V_(0) = 10 m/sec at an angle of theta_(0)= 30^(@) to the horizontal Find the position of the stone wrt the point of projection just after a time t = 1/2 sec.

A projectile is fired at an angle of 30^(@) to the horizontal such that the vertical component of its initial velocity is 80m//s . Its time of fight is T . Its velocity at t=T//4 has a magnitude of nearly.

A ball is projected with 20sqrt2 m//s at angle 45^(@) with horizontal.The angular velocity of the particle at highest point of its journey about point of projection is

Two projectiles A and B are projected with same speed at an angle 30^(@) and 60^(@) to the horizontal, then which of the following is not valid where T is total time of flight, H is max height and R is horizontal range.