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

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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