Brad is riding his bicycle on a straight stretch of road. When he passes a traffic light, he begins timing himself. In 29.9 seconds, he cycles 220 meters.
His rate of acceleration during this stretch was 0.14 m/s2. Given this
information, what was Brad's initial velocity when he started timing himself?
Assume all motion is in the positive direction.

A) 2.9 m/s

B) 5.3 m/s

C) 0 m/s

D) 7.8 m/s

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?