urgent!!! 1) Prove that the maximum horizontal range is four times the maximum height attained by the projectile, when fired - Physics -

Question

urgent!!!
1) Prove that the maximum horizontal range is four times
the maximum height attained by the projectile, when fired at an
inclination so as to have maximum horizontal range
2) A balloon is raising up vertically with a uniform
velocity of 29m/s a stone is released from it reaches the earth in
10 seconds after it is dropped Find the height from which the stone
when dropped (g= 9 8m/s2)
3) At what angle two forces (P+Q) and (P-Q) act so that
the resultant is √(3P2+Q2)

Himanshu · Accepted Answer