i. An object with mass m = 25 kg is dropped 15 m from rest onto the top an inclined surface (see diagram).

(a) What is the velocity of the object just as it reaches the surface of the inclined surface? Do not use kinematic equations for constant acceleration.

ii. After the object lands on the surface, it slides 6 m down the incline (see diagram below). The surface has a coefficient of kinetic friction 0.1.

(b) What is the work done on the object by the friction force?

(c) What is the work done on the object by the gravity force?

(d) What is the work done on the object by the normal force?

(e) What is the net work done on the object?

(f) What is the velocity of the object after it has traveled 6 meters down the incline? Do not use kinematic equations for constant acceleration.

Transcribed Image Text:

15.0 m 20° 15.0 m 20°

Answer rating: 100% (QA)

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