- 44

- 0

**1. Homework Statement**

A 100 kg block is pulled at a constant speed of 3 m/s across a horizontal floor by an applied foce of 145 N directed 37 degrees above the horizontal. What is the rate at which the force does work on the block? _____ W

**2. Homework Equations**

work = force (dot product) displacement

work = .5m * v^2 (final) - .5m *v^2 (initial)

**3. The Attempt at a Solution**

i used the second equation and plugged in my mass as 100kg and my final velocity as 3. so i got .5(100)(3^2) = 450 W. That seems like an awful lot to me ????