A 075-Kg Sphere Is Released from Rest and Is Moving 5

Multiple Choice

A 0.75-kg sphere is released from rest and is moving 5.0 m/s after falling 2.0 m in a viscous medium. What is the change in mechanical energy caused by the force the viscous medium exerts on the sphere during this descent?

A) −6.1 J
B) −4.6 J
C) −5.3 J
D) −6.8 J
E) −2.7 J