Which of these is equivalent to the law of conservation of energy?
a. the total mechanical energy is always conserved.
b. friction is a nonconservative force.
c. kinetic energy can be transformed into thermal energy.
d. the total energy of all types remains the same in a closed system.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?