A projectile is thrown with initial velocity v0 and angle 30° with the horizontal. If it remains in the air for 1 s, what was its initial velocity?

Question

A projectile is thrown with initial velocity v0 and angle 30° with the horizontal. If it remains in the air for 1 s, what was its initial velocity? (A) 19.6 m/s (B) 9.8 m/s (C) 4.9 m/s (D) 1 m/s

Tardigrade Admin · Accepted Answer

Time of flight T=(2 u sin θ/g) Given, u=v0, T=1 s, θ=30°, g=9.8 m / s 2 v0=u=g=9.8 m / s

Q. A projectile is thrown with initial velocity $v_{0}$ and angle $3 0^{\circ}$ with the horizontal. If it remains in the air for $1 s$ , what was its initial velocity?

19.6 m/s

9.8 m/s

4.9 m/s

1 m/s

Time of flight $T = \frac{2 u s i n θ}{g}$
Given, $u = v_{0}, T = 1 s,$
$θ = 3 0^{\circ}, g = 9.8 m / s^{2}$
$v_{0} = u = g = 9.8 m / s$

Q. A projectile is thrown with initial velocity v0​ and angle 30∘ with the horizontal. If it remains in the air for 1s, what was its initial velocity?