The fact that if the price of milk, butter, or cab rides increases, people might switch to soy milk, margarine, or the bus, is an example of what factor that shifts demand?
a. income
b. consumer tastes
c. prices of related goods
d. consumer expectations

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy. work depends on the square of the change in potential energy. work is equal to the negative of the change in kinetic energy. work is equal to the square of the change in kinetic energy