The speed of light is about 3.00 108 m/s. Convert this fi gure to miles per hour.

PH 101- Week 2 Notes 3 basic quantities to describe the motion of some system 1. Displacement- length, vector quantity (has direction/sign) a. x=x -2 1 t=t 2t 1 2. Velocity- rate at which position is changing with time; units of length/time (m/s) a. Average velocity v(overline)=x/t =(x -x )2(t1-t 2 1 b. Position-time plot (slope=average velocity) c. x=v(overline)t d. Instantaneous velocity: velocity at some instance i. Magnitude of instantaneous speed e. Suppose you want to take the instantaneous velocity at t 1 i. Slope of the tangent line at t=t 1 ii. =lim xf-x1 tft1 f -1 v=lim x -x 2 1 t2t 1 -2