Homework Statement
airplane files horizontally with constant speed of 260 mph at an altitude of 500m. Ignore height of this point above sea level. Assume acceleration due to gravity is g= 9.8m/s^2
After ejecting a package from the plane, how long will it take for it to reach sea level from...
Well, I tried that. It was incorrect! Now what do you suggest. I definitely didn't see that as the answer either.
v = sqrt vx^2 + vy^2
v = sqrt 11.1^2 + 17.8^2
v = 30 m/s (which is marked as incorrect)
Well, does Vo the originally stated 21.0m/s? That would mean the final velocity is 38.8 m/s... still not making sense. Please clarify, someone!
Originally Posted by Idealism_Theory
Yes, I am completely stumped. If they're asking for velocity at highest point, naturally I'd think Vy. I...
Yes, I am completely stumped. If they're asking for velocity at highest point, naturally I'd think Vy. I didn't think Vx could even have a "highest" point?! Only Vy has a velocity of zero. As for Vx, what could what could that possibly be?
Here's what I'm thinking now...
Using equation...
Homework Statement
A tennis player hits a ball at ground level, giving it an initial velocity of 21.0 m/s at 58.0 deg above the horizontal. What is the ball's velocity at the highest point?
Homework Equations
Vx=Vocos(theta)
Vy=Vosin(theta)
y=1/2-g(t^2)+Vy(t)
V-Vo/a = t
The...
Okay, so I feel as if I'm getting the cold shoulder here. I honestly do not understand regardless of answers which is why I indicated I wasn't intending on someone doing the work for me... Anyone else care to explain the logic in all of this?
When trying to solve a) .. I arrived at an incorrect answer using d=0(7.0s)+1/2(3.70m/s^2)*(7.0s^2). Not sure what else I could possibly use. I understand what is meant by no upward thrust since it fails. So, 9.8 m/s^2 was correct. The direction is definitely downward because of this. Still...
Okay... so I'm not sure where exactly to start with all of this. It seems to be a big problem with manipulating these equations for me. Can someone please make sense of this problem... I don't want the answer!
Homework Statement
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 3.70 (m/s^2}. At 7.0 (s} after blastoff, the engines suddenly fail, which means that the force they produce instantly stops.
a)How high above the launch pad will the rocket...