Pete the Penguin loves to sled down his favorite hill. If he hits a speed of 50 m/s after 5 seconds, what is his rate of acceleration? Hint: He starts at 0 m/s at the top of the hill.

Alright, we know that the acceleration is equal to the difference of speed, divided by the time:

a = vf-vi/t

Where vf is the final speed and vi is the initial speed.

In this case the initial speed is 0 so:

a = v/t = (50 m/s) / 5s = 10m/s^2

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)