Two identical balls are kicked from ground level with the same initial speed
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Two identical balls are kicked from ground level with the same initial speed v0. Ball P is launched at 30∘ above the horizontal, and ball Q is launched at 60∘ above the horizontal. Neglect air resistance. Which of the following correctly compares the time each ball spends in the air (time of flight)?
(a) Ball P remains in the air longer because it travels farther horizontally.
(b) Ball Q remains in the air longer because it has a larger initial vertical velocity component.
(c) Both balls remain in the air for the same amount of time because they have the same initial speed and land at the same height.
(d) Ball Q remains in the air for twice as long as Ball P because its launch angle is twice as large.