Question

An electron moving along the x axis has a position given by x = 12te-4t m, where t is in seconds. How far is the electron from the origin when it momentarily stops?

Answer 1

@myininaya

Answer 2

When the particle stops, its velocity is zero. Hence, first take the derivative of the position equation to get the equation for velocity:
\[x' = v = dx/dt\]
Then set v = 0 and solve for t.
Finally, take what you found for t, and plug it into the position equation.

Answer 3

allright i got it now thanks