Which has a longer time of flight t (time interval between launch and hitting the ground)? In

Which has a longer time of flight Δt (time interval between launch and hitting the ground)?

In Fig. 4.30, two projectiles launched with the same initial speed but at different launch angles 30° and 60° land at the same spot. Ignore air resistance. Answer choices:
(a) Projectile launched at 30°
(b) Projectile launched at 60°
(c) They are equal.

Transcribed Image Text:

80 75° Equal ranges 60 60° 旦 40 Maximum range 45° 30° 15° 100 x (m) 20 (u) A