- #1

- 43

- 0

**need help on projectile!!**

## Homework Statement

A projectile is fired at an angle of 38 degrees with respect to the x axis and with an initial velocity in the x direction of 3.3 m/sec. (gravity=10m/sec^2)

a)whats the initial velocity of the projectile?

## Homework Equations

a) i think

*Vy=Vi(sin38 degrees)*

and

*a^2+b^2=c^2*

## The Attempt at a Solution

I first want to get the Vy by using: Vy=Vi(sin theta)

so, Vy=3.3m/sec(sin 38 degrees)

Vy=2.03 m/sec

now, (2.03)^2 + (3.3)^2= r^2

so r or the initial velocity of the projectile =3.87 m/s ????????