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Question 3

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.