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## Homework Statement

A projectile is launched at a 45 degree angle 1.2m off the ground. Its horizontal displacement is 25.58m. Assuming no wind resistance or friction or anything like that, how long did the launch take?

horizontal:

ΔDx=25.58m

Vertical:

ΔDy=1.2m

a=9.8m/s^2

θ, or Angle = 45 degrees

## Homework Equations

I'm not sure so I'll just list a bunch I think could be relevant.

Standard BIG 4 equations.

V=D/T

a=(Vf-Vi)/t

d=([Vf+Vi]/2)t

The quadratic formula.

## The Attempt at a Solution

I don't even know where to begin to be honest, I don't know any speed/velocity.