Recent content by foreverlost

I assumed it had to be zero for either final or initial velocity. so i can solve for v. i first tried vf = 0m/s to say the object has landed, and then i'd solve for vi with this formula.

Homework Statement A box whose mass is 4kg is at rest on the floor. It is then lifted to a height of 2m by a constant a constant force F and then released. At this point the box has upward velocity of 5m/s. Do not use Newton's laws of motion to solve this problem. A. Find magnitude of the...

Homework Statement Find an equation of the tangent line to the curve y = x√x that is parallel to the line y = 1+3x. Homework Equations m = 3 The Attempt at a Solution Here is my attempt: dy/dx(x) * dy/dx(x^(1/2)) = (1) * (1/2x^(-1/2)) = (1/2x^(-1/2)) (1/2x^(-1/2)) = 3 →...

Thanks Doc Al. I always did have trouble with trigonometric identities. Fortunately this exact problem was on the exam, and I practically remembered every step without much thought lol.

tanθ = sin/cos 1/tanθ = cotθ = -sinθ/cosθ

Okay What confused me was that I didn't know how to get rid of Z from inside the parenthesis. I'm not sure could I just plug in any number to θ and figure it out? I just get different numbers.

Homework Statement This is collision in 2D problem. I already did most of the work except I'm stuck on the trigonometry and algebra for solving for the final velocity of object a. I will put the problem here just in case someone wants to show me a better way for getting to the answer...