A 10-kg object is dropped from rest. After falling a distance of 50 m, it has a speed of 26 m/s. What is the change in mechanical energy caused by the dissipative (air) resistive force on the object during this descent?
A) −1.3 kJ
B) −1.5 kJ
C) −1.8 kJ
D) −2.0 kJ
E) −2.3 kJ

Question

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The Answer of A 10-kg object is dropped from rest. After falling a distance of 50 m, it has a speed of 26 m/s. What is the change in mechanical energy caused by the dissipative (air) resistive force on the object during this descent?
A) −1.3 kJ
B) −1.5 kJ
C) −1.8 kJ
D) −2.0 kJ
E) −2.3 kJ

A 10-Kg Object Is Dropped from Rest