The 100-m dash can be run by the best sprinters in 10.0 s. A 65-kg sprinter accelerates uniformly for the first 50 m to reach top speed, which he maintains for the remaining 50 m. (a) What is the average horizontal component of force exerted on his feet by the ground during acceleration? (b) What is the speed of the sprinter over the last 50 m of the race (i. e., his top speed)?

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

the cellphone, they would then know if the killer would have contacted them or always hated them. or if it was a breakup. but if that is not the case, then it would be the clothing. to put in a bullet, it would have to be put in by hands. hands have finger prints which, would have giving you the answer of who done it.

explanation:

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."