# Projectile motion

1. May 22, 2008

### H3lpPlz

1. The problem statement, all variables and given/known data
Calculate any or all of the following: horizontal velocity, initial vertical speed, angular launch speed, launch angle, and maximum height all for an object with a mass of 7.3g that is projected 24.5m.

2. Relevant equations

3. The attempt at a solution
V=d/t V=24.5/7.3 V=15.031

2. May 27, 2008

Remember the basic equations of motion for particles like this

$$v = u + a t$$

$$s = s_0 + u t + (1/2) a t^2$$

$$v^2 = u^2 + 2 a s$$

where v is the final velocity, u is the initial velocity, s is the displacement, a the acceleration and t the time.

Also remember that you are going to be assuming no air resistance, so horizontal velocity will remain constant.

Applying these formulae to verticle and horizontal components of the initial velocity should get you all of those

=]

3. May 29, 2008

### rockerdoctor

another formula that may come in handy is...
2a∆y=V²-Vo²

where Vo=initial velocity.
since it includes horrizontal motion, be sure to use the right componants when pluging in the variables, expecially for velocity. good luck

Last edited: May 29, 2008