- #1

rashida564

- 220

- 6

## Homework Statement

A particle is projected inside a tunnel which is 2 m high and must not hit the side or ceiling of the tunnel. If the initial speed is U show that the maximum range of the particle inside the tunnel

You may assume that the maximum range is attained when the projectile just grazes the roof of the tunnel.

## Homework Equations

Δy=Usin(θ)t-½gt

^{2}

Δx=Ucos(θ)t

## The Attempt at a Solution

Since the maximum range is attained when the project gazes the top of the roof then Δy=2m. U is know so the first equation I can use is 2=Usin(θ)-½gt

^{2}I assumed that vf=0 (even though I am not sure) 0=Usin(θ)t so I solve for t and substitute it into the first equation,then Idk what should I do I think it has something to do with Δx=Ucos(θ)t

Last edited by a moderator: