Projectile Motion Calculations for a Shell Fired at 30 Degrees

[mc2_phy]

Homework Statement

A shell is fired at an abgle of 30 degrees to the horizontal. If the shell stays in the air for 40 seconds, calculate
a)how far it lands from it's original position
b)the highest point it can reach

Homework Equations

N/a

The Attempt at a Solution

I was unparticularly sure because the q says 40 seonds- should it be 40m/s

 

[grzz]

Is

v = v$_{0}$ +gt

a familiar equation?

 

[WillemBouwer]

Use your linear motion equations.

v = u+gt
s = ut + 0.5gt^2
and v^2 = u^2+2gs

make an inventory of what parameter values you have and see which equation suits it best...

 

[mc2_phy]

No not really. Just wondering how you solve this.

 

[mc2_phy]

thank you.