Xf = vt + x0 Practice It is suspected that a person cheated in a 200 m dash race. His velocity was measured to be 15 m/s and he finished the race in 13 seconds. How far of a head-start did he have (normal starting position would be an initial position of 0 m).

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=