Projectile problem

  • #1
you launch a projectile with an initial velocity of at an angle of 30 degrees and it hits a target .4 secpmds after it is launched at a horizontal distance of .4m
a. what is the y coordinate of the target
b. what was its intial velocity
c.what is the y- components of it s velocity just before it impacts the target
d. and what is its velocity magnitude and direction just before it impacts the target.

what i did:
1. drew graph
2. vy^2+2ay(y-y0) to find initial velocity
vy0= 2.8 m/s
3. find time
with vy=vy0+at
0-2.8/-9.8=.285 seconds
4. y coordinate:
y=voy+1/2at^2
.399


idk how to find the others... please help me.
 

Answers and Replies

  • #2
haruspex
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I suggest parking this one until we've dealt with the other similar problem you just posted. Then you can use this one to see if you've learnt how to do them.
 

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