Answer :
A ) 200W
Explanationpower is the amount of energy transferred or converted per unit time
[tex]\begin{gathered} Power=\frac{W}{t} \\ where\text{ P}is\text{ the power \lparen Watts\rparen} \\ W\text{ is the work done} \\ \text{ t is the time} \end{gathered}[/tex]also,• Work done on an object is defined as the magnitude of the force multiplied by the distance moved by the object in the direction of the applied force
[tex]Work(W)=Force\text{ *distance}[/tex]therefore, replacing we have
[tex]\begin{gathered} Power=\frac{W}{t} \\ Power=\frac{Force*distance}{time} \end{gathered}[/tex]
hence,
Step 1
a)let
[tex]\begin{gathered} Force=800\text{ N} \\ distance=5.0\text{ m} \\ time\text{ = 20 s} \end{gathered}[/tex]b) now, replace in the formula:
[tex]\begin{gathered} Power=\frac{Forced\imaginaryI stance}{t\imaginaryI me} \\ Power=\frac{800\text{ N*5.0 m}}{20\text{ s}} \\ Power=200\text{ Watts} \end{gathered}[/tex]therefore, the answer is
A ) 200W
I hope this helps you