Recent content by Rebecca Berger

I asked my physics professor that question, he said they're going different directions but one is slowing down but the other is speeding up, but they both start at 10m/s, I would have thought one would be going a negative velocity. But what you're saying is that I do use the second equation, but...

I meant a speed of 10m/s, sorry

Homework Statement Two trains approach each other on a straight level track: one from the east and the other from the west. Initially they are 7,500 meters apart and have a spray of 10meters/s with respect to the ground. If both locomotives accelerate toward the east at a constant rate of .025...

I manipulated the wrong equation

Yes, sorry I made a typo

I took X=X0+v0t+1/2at^2 and separated v0t because v=v0+at so it can just say vt . I then subtracted X0 from both sides and divided by t on both sides. My final equation was X-X0/t=[1/2(v+v0)]

Homework Statement Given the equations X=X0+v0t+1/2at^2 and v=v0t+at, show that an expression for v that has no explicit dependence on time can be written as v=+-√v0^2+2a(X-X0) Homework EquationsThe Attempt at a Solution I thought I would manipulate the first given equation to be X-X0/t =...