31 A projectile is launched from level ground with an initial speed at an angle with…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

31 A projectile is launched from level ground with an initial speed

v 0

at an angle

\theta

with the horizontal. If air resistance is negligible, how long will the projectile remain in the air? (A)

2 \mathrm{v}_{0} / \mathrm{g}

(B)

2 \mathrm{v}_{0} \cos \theta / \mathrm{g}

(C)

\mathrm{v}_{0} \cos \theta / \mathrm{g}

(D)

\mathrm{v}_{0} \sin \theta / \mathrm{g}

(E)

2 \mathrm{v}_{0} \sin \theta / \mathrm{g}