(IO)A projectile is thrown from the base of an inclined of angle \( 30^{\circ} \), what should be the angle of projection . as measure from the horizontal direction so that range on the incline is maximum?
b/uD ses a ball thrown in arbitrary direction obeys projectile motion? Explain
(iii) the horizontal range of a particle projected with a velocity U and R , show that the greatest height attained is given by the equation below.
\[
16 \mathrm{H}^{2}-8 \mathrm{U}^{2} \mathrm{H}+\mathrm{gR}^{2}=0
\]