A student analyzes a projectile launched from ground level with an initial horizontal…
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics
Problem
A student analyzes a projectile launched from ground level with an initial horizontal speed v0 relative to Earth. She is interested only in the time the projectile spends in the air before landing at the same height. Which reference frame would allow her to determine the flight time using the fewest variables?
(a) A frame accelerating downward at g
(b) A frame moving horizontally at speed v0 in the same direction as the projectile
(c) Earth’s ground frame
(d) A frame accelerating upward at g