Jon and Jim push a dead car forward to the gas station. Jon pushes with 90 N while Jim pushes 80 N.

Answer body lying face up ;

Ke reqd to move from 0 to 50 will be proportional to 50x50 or 2500. this is equal to w.  to change vel from 50 to 150 you need energy prop to 22500 - 2500 = 20,000. this corresponds to 8w.  best answer is a) . work reqd is prop to velocity squared. 

There are no answer choices, but a metaphor is a comparison between two objects that are not usually related without using like or as.