3 If a book is resting on the palm of your hand and you walk across the hall the work done on the book by your hand is zero

Question

3 If a book is resting on the palm of your hand and you walk across the hall the work done on the book by your hand is zero because a the force on the book by your hand does not cause the displacement of the book b no forces exist at all on the book i e if you were to draw a FBD of the book no forces would be drawn in the FBD c both a and b are true d the displacement of the book is zero from its initial position to its final position e all of a b and d are true 4 Kinetic energy is being transformed into gravitational potential energy when a a stone is thrown vertically upward b a ball is falling freely downward a car is accelerating downhill d a train is brought to rest by application of the brakes e none of the above

Kunduz · Accepted Answer

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