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1. The problem statement, all variables and given/known data

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?

2. Relevant equations

a) i thinkVy=Vi(sin38 degrees)

anda^2+b^2=c^2

3. 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 ????????

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# Homework Help: Need help on projectile

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