Work, Energy And Power

Question 1

Work

Answer 1

The product of the force acting on an object and the displacement of the object in the direction of this force

Question 2

Work-Energy Theorem

Answer 2

Net work done on an object by a net force is equal to the change in kinetic energy of the object

Question 3

Conservative Force

Answer 3

Forces for which the work done in moving an object between two points is independent of the path taken

Question 4

Non-Conservative Force

Answer 4

Force for which the work done in moving an object between two points depends on the path taken

Question 5

Law of Conservation of Mechanical Energy

Answer 5

The total mechanical energy in a closed system remains constant

Question 6

Power

Answer 6

Rate at which work is done or the rate at which energy is transferred

Question 7

The Doppler Effect

Answer 7

Apparent change in frequency of a sound when a source of sound and a listener move relative to one another