Q. A missile is fired for maximum range with an initial velocity of 20 m/s. If g = 10 m/s², the range of the missile is
A) 20 m
B) 40 m
C) 50 m
D) 60 m
Explanation
[Solution from source] Maximum range occurs at 45°, R = u²/g = 20²/10 = 40 m. The value 20 m is the range for u²/2g, which is the maximum height formula at 90°, not the range. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.