Question

9 sally can do 30j of work in 30 seconds while mary can do 60j of work in 60 seconds. compare their power output. a sally produces more power than mary b mary produces more power than sally c both sally and mary produce the same amount of power

Explanation:

Step1: Calculate Sally's power

Power formula is \(P=\frac{W}{t}\). For Sally, \(W = 30J\) and \(t=30s\). So \(P_{Sally}=\frac{30J}{30s}=1W\)

Step2: Calculate Mary's power

For Mary, \(W = 60J\) and \(t = 60s\). So \(P_{Mary}=\frac{60J}{60s}=1W\)

Answer:

C. Both Sally and Mary produce the same amount of power