For which one of the following motions is the object's displacement different than the distance traveled?
a. A football coach paces back and forth along the sidelines.
b. The plane moves from a low speed to a high speed along the runway.
c. Jeremy darts straight down the hallway at a constant speed.

What is work? how much work is done to move an object 0 meters?

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.