Recent content by CyberSyringe

0 = Vinitial + 15 m/s - 800m^2/s^2 I believe all I do now is quadratic equation and then solve for Vi that way?

I've gotten as far as setting it up to solve for Vinitial, but at this point I am stumped on actually being able to solve the equation. 0 = Vinitial^2 + 2(-10m/s^2)(40m - 0.75sVi) I don't know how to isolate Vinitial by itself, and the units are also quite confusing.

Homework Statement A driver of a car suddenly sees the lights of a barrier 40m ahead. It takes the driver 0.75s before he applies the brakes, and the average acceleration during braking is -10.0m/s^2 What is the maximum speed at which the car could be moving and not hit the barrier 40.0m...

Another way to think about light traveling through space is the laser. The reason lasers have such a far range as opposed to, say, a flashlight is for the very reason that the light does not disperse outwards as fast because of its focused nature. There's obviously still a minuscule amount of...

Your way of looking at it is absolutely wrong. Assuming a center point, then you can assume equal amounts of light will hit each wall, or the 6 sides of the cube. Instead of assessing the volume which deals with cubes, you deal with surface areas instead, which deal with squares. Even the 3D...