Homework Statement
An object has a mass of 10 lbm.
b. Find the change in kinetic energy ft·lbf when its velocity decreases from 50 mph
to 15 mph.
Homework Equations
KE=1/2mv^2
Ke=(ft*lbf)
1MPH=1.4667 ft/s
The Attempt at a Solution
When calculating this, does it need to be in slugs, lbm, or...