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NEET Physics QUESTION #7329
Question 1

Two projectiles of the same mass and speed are thrown at $60°$ and $30°$ with the horizontal. Which quantity is the same for both?

  • Time of flight
  • Range of projectile✔️
  • Maximum height
  • All of them
Correct Answer Explanation

For complementary angles ($60°$ and $30°$, since $60°+30°=90°$) with the same initial speed:

Range $R = \dfrac{u^2\sin2\theta}{g}$: $\sin(120°) = \sin(60°)$ ✓ — same range.

Time of flight $\propto \sin\theta$ — different. Max height $\propto \sin^2\theta$ — different.