If an airplane is running low on fuel, the pilot may decide to dump unneeded weight. As the airplane gets lighter, the engines need less fuel to generate the
same amount of acceleration for flight. The pilot has taken advantage of
Newton's law of motion.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Decreased sensitivity to an unchanging stimulus is known as

Coal contains energy. a. light b. kinetic c. chemical d. mechanical