Which of these examples best illustrates Newton's Second Law of Motion? A: A 100 lb boy has twice as much inertia as a 200 lb boy.
B: A truck needs a more powerful engine than a small car.
C: A hockey puck slides easily across the ice.
D: A satellite stays in orbit for a long time.

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)