that really does help!
but it's too late now, I just sent of the homework assignement and just left out this problem (and the others :D) (I am doing this for summer school, over the internet)
But I don't really think it matters that much...I will still try to solve the problem, because of the...
They arrive at the same time, I think, right?
(I did a little experiment :D )
Don't know how to do that with formulas or something...but...well...
since the first stone is dropped, it should arrive at x=0, right? so I Just have to find the x value of the other stone??
which variable do I have to set equal to zero to get the value of y when it hits the ground?
b) i actually think I understand what I am doing in b. I don't understand a at all though...
Thanks a lot for your help!
so...you are saying:
a) t=0 in the equations and the solution is the answer?
b)for the maximum range i take the first derivative and solve it for t??
and yes, I know that it's sort of silly to post 3 problems involving the same equations...
I just really, really, really don't understand...
Thanks for helping me!
Isn't the vertical position of the projectile
y=t*v*sin(alpha)+0.5gt²
so here it would be:
y= t*45*sin(alpha)+0.5 (-32)*t²+850
but what is alpha?
and how is this supposed to help me?
I think I know what it is now...:)
the y equation is correct, but the x equation is
x=t*300...
and I just graphed it without my calculator...still don't know why it didn't work...
but thanks for your help anyways!
:smile:
Homework Statement
A sport rifle used for target shooting has a muzzle velocity of 1200 ft/s
a) what is the maximum range of the rifle if it is fired about 5 feet above the ground?
b) how long would a bullet be in the air if it was fired for the maximum range?
Homework Equations...
Homework Statement
Two stones are launched at the same time from the top of a building, 850 feet high. The first stone is simply dropped over the edge, while the second stone is thrown horizontally at 45 feet/second.
a) which stone will reach the ground first? Explain your answer.
b) About...
Homework Statement
An airplane flying at an altitude of 3500 feet is dropping supplies to researchers on an island. The path of the plane is parallel to the ground at the time the supplies are released and the plane is traveling at a speed of 300 mph.
a) write the parametric equations that...