Answer:
Power = 450 Joules / 50 seconds = 9 J/s = 9 W *average* power
Explanation:
Power = Energy / Time ( or Work / Time) just as Velocity = Distance / Time
So, the average power needed for 50 seconds to do 450 Joules of work is simply 450 J / 50 s = 9 J/s = 9 Watts (The unit Watt is defined so that 1 Watt = 1 Joule / Second). It's important to note that 9W is the *average* power. The problem does not say that Tyler does work at a constant rate, so it's worth adding that caveat to the answer!
