Recent content by halbe1

Homework Statement Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance D_A beyond the starting line at t = 0. The starting line is at x=0. Car A travels at a constant speed v_A. Car B starts at the starting line but...

I got 5.40 is that right?

Yea, I'm trying to get t in seconds. I tried factoring out a t and then getting two answers for t, t=0 and t=-113. So I know neither of those are right.

Well the slope of velocity is the acceleration. I tried taking the derivative to find out the time and got 17.8...apparently that's wrong though.

Alright but what do I do once I get to 0=-115+5.10t+4.9t^2?

Homework Statement A particle moves along the x axis. Its position as a function of time is given by x = 6.8t + 5.5t^{2}, where t is in seconds and x is in meters. What is the acceleration as a function of time? Homework Equations The Attempt at a Solution

So what does "u" stand for and does "g" stand for gravity?

Homework Statement A helicopter is ascending vertically with a speed of 5.10 m/s. At a height of 115m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground? [Hint: v_0 for the package equals the speed of the helicopter.] Homework...