Posted by Andrea on .
Compared to yesterday you did 3 times the work in one third the time. To so so your power output must have been:
a) the same as yesterday's power output
b)one third of yesterday's power output
c)3 times yesterday's power output
d)9 times yesterday's power output
a) obviously isn't the correct answer. Wouldn't the answer be d)?

Physics 
bobpursley,
d is right.