Question

Two projectiles A and B are thrown with the same speed but at angles 40^ and 50^ with the horizontal. Then

• A. A will fall earlier
• B. B will fall earlier
• C. both will fall at the same time
• D. None of these

Hint:

Projectiles fired at complementary angles with the same speed have equal time of flight.

Answer 1

The Correct Option is C

Step 1: Time of flight of a projectile is T = (2u θ)/(g)
Step 2: For angles θ and 90^ - θ, 40^ = 50^
Step 3: Hence, both projectiles have the same time of flight.