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Projectiles dealing with a bullet

  • Thread starter gotpink74
  • Start date
  • #1
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1. Homework Statement
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.



Homework Equations



vector triangle sin and cosine

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
 

Answers and Replies

  • #2
gneill
Mentor
20,792
2,770
You'll need to use the kinematic equations for projectile motion (horizontal and vertical components).
 
  • #3
49
0
i know that i just can't figure out the horiz and vertical components is
vertical
Vi:1600
thats all i know
 
  • #4
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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