A ball is projected with an velocity`V_(0)` at an angle of elevation `30^(@)`. Mark of the correct statement.

A ball is projected with a velocity 20 sqrt(3) ms^(-1) at angle 60^(@) to the horizontal. The time interval after which the velocity vector will make an angle 30^(@) to the horizontal is (Take, g = 10 ms^(-2))

A ball is projected with a velocity 20 sqrt(3) ms^(-1) at angle 60^(@) to the horizontal. The time interval after which the velocity vector will make an angle 30^(@) to the horizontal is (Take, g = 10 ms^(-2))

A ball is projected with velocity v_(0) at an angle alpha to the horizonal, towards a smooth wall which appraches the ball. With velocity u. After collision the ball retraces its path to the point of projection . What is the time t taken by the ball form the instant of projection to point of impact ?

Five balls are placed one after the other along a straight line as shown in the figure. Initially, all the balls are at rest. Then the second ball has been projected with speed v_(0) towards the third ball. Mark the correct statements, (Assume all collisions to be head-on and elastic.)

Five balls are placed one after the other along a straight line as shown in the figure. Initially, all the balls are at rest. Then the second ball has been projected with speed v_(0) towards the third ball. Mark the correct statements, (Assume all collisions to be head-on and elastic.)

A particle is projected obliquely into air with velocity of 20 m/s at an angle of elevation of 45^@ . Neglecting air resistance the equation of motion is

The equation of a path of a projectile which is a projected with a velocity (V_(0)) at an angle 0 with horizontal is (x and y are horizontal and vertical displacement respectively)