Ms. Garcia hits the breaks of her sports car to avoid hitting a cat; she decelerates uniformly at - 5.2 m/s ^ 2 as it slows from 10.0 m/s to 0 m/s How long did the car take to come to a stop ?

HA LOL SHE ACCTUALLY HITS THE CAN L.M.A.O

Explanation:

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more