Okay, is this correct:
We can deduce that it'll be half the time from my reasoning in the first post.
the y-axis equation we need to use is: Δy = vot + ½at2
since vo = 0, Δy = ½at2,
if we apply t/2 we get Δy = ½a(½t)2 =(¼)½at2, so we'll end up with ¼*Δy, giving us 3/4H from the ground.
Is this...
Homework Statement
Two buildings A & B are each of height H as measured from the ground & are located a distance L apart. A tennis ball is shot horizontally with a velocity vo from building A such that it just hits the bottom of building B before hitting the ground. If building B is moved to...
Oh my, I did leave out that a given is that the plank is 10m long. Sorry about that. I'll attach the diagram from the problem here. Some of the extra information is because there are follow up problems after the one I'm asking that use the center of mass value.
Problem
A 60kg woman walking at a speed of 1.0 m/s steps onto a long plank that has a mass of 60kg. Upon stepping on the plank, both she and the plank begin to slide with speed v and spin with angular rate ω on a frictionless surface.
1. How far from the woman is the center of mass of the woman...
I'm going through the Light & Optics chapter of Kaplan MCAT prep material & am having a hard time conceptually understanding the relationship between index of refraction & wavelength or with frequency.
It says in the book that n = c/v, & "when the speed of the light wave varies with...
Homework Statement
Two identical molecules, A and B, move with the same horizontal velocities but opposite vertical velocities. Which of the following is always NOT true after they collide:
A - the sum of kinetic energy before collision is less than the sum after
B - the sum of kinetic...