I recently did an expirement for my physics class in which we used a projectile launcher to fire a ball across a distance, where it would hit a piece of carbon paper.(adsbygoogle = window.adsbygoogle || []).push({});

I've been asked to solve for the initial velocity, (Vi), and the only known information is:

Vertical Acceleration = -9.81 m/s^2

Horizontal Displacement = 3.885m

Delta Y (Height Ball was launched above the ground) = 1.015m

Theta = 9 degrees

I'm not asking anyone to solve this for me, but I'm really stuck. I was wondering if anyone could tell me the steps I must do, or even better, an equation that I could use to solve this.

Any help is greatly appreciated.

Thank you.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Velocity of projectile launcher

**Physics Forums | Science Articles, Homework Help, Discussion**