Question

Shown are the trajectories of
projectile. Which have a maximum
time of flight?

Answer 1

Answer:

T₁=T₂=T₃

Explanation:

Since the height is same;we have H₁=H₂=H₃

H=u²sin²θ/2g

H₁=H₂=H₃ =>u₁²sin²θ₁=u₂²sin²θ₂=u₃²sin²θ₃

                  =>u₁sinθ₁=u₂sinθ₂=u₃sinθ₃

T₁/T₂=2u₁sinθ₁/2u₂sinθ₂=1

T₁=T₂  SIMILARLY T₁=T₃

therefore;T₁=T₂=T₃