Your velocity relative to yourself - remember, speed AND direction!
Your velocity relative to the person timing you - again, speed AND direction!
b.
Type your answer here in complete sentences.

Heat from the sun reaches earth to a. radiation b. convection c. conduction

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?