Sagot :
[tex]\tt{\huge{\blue{Explanation:}}}[/tex]
The power of an object doing a work W in a given time t is given by
[tex]\boxed{P = \frac{W}{t}}[/tex]
where:
P = power
W = work
t = time
[tex]\tt{\huge{\red{Solution:}}}[/tex]
Solving for W
W = Fd
W = (490 N)(7 m)
W = 3,430 J
Solving for P in watts
[tex]P = \dfrac{W}{t}[/tex]
[tex]P = \dfrac{\text{3,430 J}}{\text{9.5 s}}[/tex]
P = 361.0526 W
[tex]\boxed{P = \text{361.05 W}}[/tex]
Solving for P in horsepower
[tex]P = \text{361.0526 W} \times \dfrac{\text{1 hp}}{\text{746 W}}[/tex]
[tex]\boxed{P = \text{0.484 hp}}[/tex]
[tex]\\[/tex]
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