Respuesta :

Despina

Answer:

50 seconds

Explanation:

As we know that power is calculated by ,

  • power = work /time

Calculating the time :

  • Time = Work/Power

we are given that While rowing across the lake during a race, Abdi produces 80W of power doing 4000J

of work.

So,

  • Power = 80 W
  • work = 4000 J

Plugging the required values,

  • Time = 4000/80
  • Time = 50 secs.

Hence, Abdi rowed for 50 seconds

MathPhys

Answer:

50 s

Explanation:

Power = work / time

P = W / t

80 W = 4000 J / t

t = 50 s