A projectile is fired at ${30}^{\circ }$ with momentum p. Neglecting friction, the change in kinetic energy when it returns to the ground will be

Q. A projectile is fired at ${30}^o$ with momentum $p$. Neglecting friction, the change in kinetic energy, when it returns back to the ground, will be :

Q. A projectile is projected with a linear momentum ${}^{\prime }{p}^{\prime }$ making an angle $\theta$ with the horizontal. The change in momentum of the projectile on return to the ground will be :

Q. A projectile of mass $m$ is fired with velocity $v$ from a point $P$ at $\theta ={45}^o$. Neglecting air friction, the magnitude of change of momentum between the leaving pt P and arriving pt Q is:

Q. A projectile of mass $m$ is fired with velocity $v$ from a point as shown in figure, neglecting air resistance, what is the change in momentum when leaving $P$ and arriving at $Q$ ?

Q. A projectile of mass $m$ is fired with a velocity $v$ from point $P$ at an angle ${45}^{\circ }$. Neglecting air resistance, the magnitude of the change in momentum leaving the point $P$ and arriving at $Q$ is