Aflight attendant pulls a 60.0 n flight bag a distance of 239.0 m along a level airport floor at a constant speed. a 21.0 n force is exerted on the bag at an angle of 66.0 degrees above the horizontal. how much work is done on the flight bag?

The work done on the flight bag = 2041.23 J

Explanation:

Work : This can be defined as the product of the force move with distance along the direction of the force. The S.I unit of work is Joules (J)

W = F × d Equation 1

Where W = work done on the flight bag, F = horizontal force exerted on the bag, d = distance.

But,

F = F₁cos∅ Equation 2

Where F₁ = force exerted on the bag, ∅ = angle the force makes with the horizontal

Substituting equation 2 into equation 1.

W = F₁cos∅×d Equation 3

Given: F₁ = 21.0 N, ∅ = 66 °C, d = 239 m.

Substituting these values into equation 3

W = 21(cos66)×239

W = 21 ×0.4067×239

W = 2041.23 Joules.

Thus the work done on the flight bag = 2041.23 J

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.