Suppose mario is meeting a friend at noon. if he leaves his house at 11: 55 a. m., at what average speed does he have to travel to make it there on time? write you’re answer in m/s.

Speed = (distance) / (time)

Speed =

(distance in meters from Mario's house to the meeting place)

divided by

(300 sec)  

meters/sec

answer; /// the above statement is (true);

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.