An 80 kg runner accelerates out of the starting block at the rate of 2.0 m/s2. He reaches his top speed in 10 seconds. (a What force must the runner

An 80 kg runner accelerates out of the starting block at the rate of 2.0 m/s2. He reaches his top speed in 10 seconds.(a What force must the runner exert so that he can achieve his acceleration?(b What is the runner's weight?(c What is the runner's top speed?(d What is the runner's momentum when he runs at his top speed?(e If the runner continues at top speed around a turn whose radius is 75m, what is his angular momentum?