Projectiles dealing with a bullet

gotpink74 · Nov 7, 2011

1. The problem statement, all variables and given/known data
A shell is fired from the ground with an initial speed of 1.60*10^3m/s at an initial angle of 56° to the horizontal.
(a) Neglecting air resistance, find the shell's horizontal range.

(b) Find the amount of time the shell is in motion.

2. Relevant equations

vector triangle sin and cosine

3. The attempt at a solution
all of my answers have been wrong i did the triangle and got hyp 1600 opp side 1326.46 bottom 894.7 from there i dont know where to go please HELP

gneill · Nov 7, 2011

You'll need to use the kinematic equations for projectile motion (horizontal and vertical components).

gotpink74 · Nov 7, 2011

i know that i just can't figure out the horiz and vertical components is
vertical
Vi:1600
thats all i know

OliverENewell · Nov 7, 2011

Would be better to:

1) Resolve the horizontal by doing Cos (theta) x initial velocity
2) v=u+at to get time in the air
3) Get horizontal component with trig like in 1)
4) distance bullet traveled is s = d / t rearranged to give d = s x t

That's all I can give you without giving you the answer on a plate :L

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Projectiles dealing with a bullet

gotpink74

gneill

Staff: Mentor

gotpink74

OliverENewell

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