Which of the following sets of factors will affect the horizontal distance covered by an athlete in a long-jump event
Speed before he jumps and his weight
The direction in which he leaps and the initial speed
The force with which he pushes the ground and his speed
None of these
For a given angle of the projectile if the initial velocity is doubled the range of the projectile becomes
The velocity at the maximum height of a projectile is half of its initial velocity $u$. Its range on the horizontal plane is
Which of the following is the graph between the height $(h)$ of a projectile and time $(t)$, when it is projected from the ground
For angles of projection of a projectile at angle $(45^o +\theta)$ and $(45^o -\theta ) $ , the horizontal range described by the projectile are in the ratio of
A missile is fired for maximum range with an initial velocity of $20\; m/s$. If $g = 10 \;m/s^2$ , the range of the missile is ...... $m$