Question

Two projectiles of same mass and with same velocity are thrown at an angle $60$ and $30$ with the horizontal, then which quantity will remain same

• A. time of flight
• B. range of projectile
• C. max height acquired
• D. all of them

Answer 1

Answer: (B)

range of projectile

$T=\frac{2usin\theta }{g};H=\frac{u^{2}sin\theta }{2g};R=\frac{u^{2}sin2\theta }{g}$
all the quantities will change for $\theta ={30}^{o}or{60}^o$ but R will remain the same as $sin2\theta$ is same for ${30}^{o}and{60}^o$