1. Mark S. is running for a touchdown during the big game. His velocity was pretty good at 9.8 yd'sec. It took him 10.2 seconds to run for this touchdown. How far did Mark have to run to score the 6 points?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.