Question

Unit test Lindsay climbs a ladder with power output P. Brian climbs the same ladder in the same amount of time with double the power output. How does Brian's total change in energy, AEg compare with Lindsay's, AEL? Choose 1 answer: Not enough information AE; = 2AEL AEg = AE. AER = 4AEL Report a problem 5 of 11 -...

Answer 1

Power output when Lindsay climbs a ladder = $\small P_{L}$

Power output when Brian climbs the same ladder = $\small P_{B}$ = $\small 2P_{L}$

$\small Power = \frac{Total \ change \ in \ energy}{time}$

Given, time taken by both of them is same = t

Lindsay's total change in energy = $\small \Delta E_{L} = P_{L}*t$

Brian's total change in energy = $\small \Delta E_{B} = P_{B}*t = 2P_{L}*t$

= $\small \Delta E_{B} = 2\Delta E_{L}$

option (B)