Question

Ann and Carol each lift the timber with a force of 80 kg/m/s2. If they lift the timber a distance of 1.25 meters, how much work is each woman doing?

Question 1 options:

64.00 J


78.75 J


81.25 J


100.00 J

Answer 1

I believe it is C 81.25 J 

Answer 2

Answer : The correct answer is 100.00 J

Given : Force = 80
`(Kg m)/(s^2)` Distance = 1.25 m Work = ?

Work , force and distance can be related by following formula :

Work (W) = Force (F) x distance (d)

Unit used for W = Joule (J)

Force =
`(Kg m)/(s^2)` or Newton (N) Distance = meters (m)

Plugging values in formula :

W = 80
`(Kg m)/(s^2)` * 1.25 m

W = 100.00
`(Kg m^2)/(s^2)` = 100.00 J