5. A car moves with a speed of 40Km/h for 5h to reach the destination. Calculate the distance covered by the car. Dirty

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.

0.11 m/s and 0.28 m/s should be correct

at right angles to each other