Question

A mechanic uses a mechanical lift to raise a car. The car weighs 12,500 N. The lift raises the car 2.25 m in 10 seconds.

How much power was used to accomplish this task?

A.
2812.5 W

B.
1.8 x 10-4 W

C.
5556 W

D.
28.125 W

Answer 1

@sweetburger What's the formula again for this?

Answer 2

@Hayhayz

Answer 3

@jtug6

Answer 4

@sammixboo

Answer 5

@pooja195

Answer 6

Do you know the formula you would use? Any ideas?

Answer 7

work / time

Answer 8

times the distance or wait.
let me google it real quick

Answer 9

Since it says power=F x V
What is our force?

Answer 10

12,500

Answer 11

What's our velocity?

Answer 12

2.25 x 10

Answer 13

Wait I screwed up sorry >.< scratch that
First you need to use the formula for how much "work" was done (btw im lookin at my physics notes >.> i hated phyiscs)
work=force times distance
force=?
distance= ?

Answer 14

i solved it but i could be wrong too. i'll give u my answer pooja and you can see if it's right =)

Answer 15

Alright :) (don't post it here message it)
and @jabez177 did you fall asleep?

Answer 16

So 12,500 x 2.25m = 28,125

Answer 17

im almost falling asleep haha

Answer 18

Good now we would use the formula
\[\huge~\rm~\bf~Power=\frac{ Work }{ Time}\]

Answer 19

\[28,125\div10=2812.5\]

Answer 20

Perfect and that would be our answer :-)

Answer 21

Now I see.
I should have written down some notes when my teacher taught this...

Answer 22

Thank you, Pooja! :)

Answer 23

O_O

Answer 24

:P oh well have fun suffering with physics x'D

Answer 25

You're welcome :-)

Answer 26

fr haha :')