Projectile motion is a form of motion in which an object or particle is thrown with some initial velocity near the earth’s surface and it moves along a curved path under the action of gravity alone. The path followed by a projectile is called its trajectory, which is shown below. When a projectile is projected obliquely, then its trajectory is as shown in the figure below
Here velocity `u` is resolved into two components, we get (a) `u cos theta` along `OX` and (b) `u sin theta` along `OY`.
A cricket ball is thrown at a speed of 28 m/s in a direction 30° with the horizontal The time taken by the ball to return to the same level will be
Options:
(a) `2.0 s`
(b) `3.0 s`
(c) 4.0 s`
(d) `2.9 s`