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Trava [24]
3 years ago
9

18. A brother carries his little sister, who weighs 24kg, across a field 20 meters. How

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0

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

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