Recent content by AStupidHippo

Homework Statement "In part 2 of the lab you will be firing a water balloon over a tall fence, aiming to hit a target." The fence is 3 meters high. You may fire the balloon from anywhere behind the fence, up to 4 meters away from it: the target will be 20 meters away. Find the angle to shoot...

Yes. It's 1.25+.7+.7=2.6. This is the correct answer. Thank you!

Ok. So I should make v= 0 and solve for time with this: 0=6.91-9.81t t=.7 And then I add it it to 1.25? So the answer is 1.25+.7= 1.95

Hi! So this is what I did: (Impact velocity - initial velocity)/a = t (19.2-6.91)/9.81=t This gave me t=1.25

Homework Statement While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.91 m/s. The stone subsequently falls to the ground, which is 16.5 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How...

Yes, that is quite careless of me. My formulas for both are correct tho, right?

Homework Statement 1.In a game a .12kg disk is shot across a frictionless surface . The spring is compressed by 6cm. The spring constant is 230 N/m. What is the magnitude of the spring force? 2. A piece of plastic is attached to a spring. The spring is compressed 2cm and the released. If the...

"Can you draw a free-body diagram for the cart at point B to help you out? What forces are acting on the cart?" It would be G only. Correct? It would be G only, correct?

I don't think I can solve this problem using fn-mg=(mv^2)/r. The Ms would just cancel out?

I should have clarified.We did most of A in class, B. is where I'm struggling at most.

Homework Statement A roller-coaster car speeds down a hill pas point A and then rolls up a hill past point B. A. Car speed = 20 m/s at point A. If the track exerts a normal force on the car of 2.06x10^4N at this point, what is the mass of the car? (account for gravitational force) B. What is...