Answer:
457.14 Watt
Explanation:
The information we have is:
Force: [tex]F=800N[/tex]
Distance: [tex]d=4m[/tex]
Time: [tex]t=7s[/tex]
the formula for the power is:
[tex]P=\frac{W}{t}[/tex]
where [tex]W[/tex] is work, and [tex]t[/tex] si time.
Also, the formula for work is:
[tex]W=F*d[/tex]
Where [tex]F[/tex] is the force, and [tex]d[/tex] is the distance.
Substituting the formula for work into the formula for power:
[tex]W=\frac{F*d}{t}[/tex]
substituting all the values to find the power:
[tex]P=\frac{(800N)(4m)}{7s}=\frac{3200Nm}{7s}\\ P=457.14W[/tex]
the power that was used is 457.14 Watt
