Question

18. A brother carries his little sister, who weighs 24kg, across a field 20 meters. How
much work did he do?

Answer 1

Answer:

4800 joules

4.8 kilojoules

Step-by-step explanation:

$Work done = Force * distance\\Workdone = (mass*acceleration)*distance\\Note : force = (mass*acceleration) , Acceleration- due- to -gravity =10m/s^2\\W.D = 24 * 10*20\\W.D = 4800 joules\\W.D =4.8Kilo joules$