1. If the mass of the cannonball increases, and all other initial conditions stay the same, what would happen to the velocity and kinetic energy of the cannonball? The velocity decreases, and the kinetic energy increases.

The velocity increases, and the kinetic energy increases.

The velocity decreases, and the kinetic energy decreases.

The velocity increases, and the kinetic energy decreases.

2. Which of these changes will increase the energy loss of a building?

an increase in temperature difference between the inside and outside of the building

an increase in the R-value for the insulation materials used in the building

a decrease in the energy flux (W/m2) of the building

a decrease in the temperature of the outside of the building

3. How does the total kinetic energy of a cannon and cannonball system change as the mass of the cannon increases and the energy of the blast remains the same?

The total kinetic energy cannot be determined.

The total kinetic energy remains the same.

The total kinetic energy decreases.

The total kinetic energy increases.

4.In a closed system consisting of a cannon and a cannonball, the kinetic energy of a cannon is 72,000 J. If the cannonball is 18 kg and has a velocity of 23 m/s when fired from the cannon, what is the total kinetic energy of the system?

72,207 J

76,761 J

71,793 J

67,239 J

5. In a computational model of the energy loss of a house, if the energy flux increases and the total area insulated increases, what happens to the energy loss of the house?

The energy loss can increase or decrease.

The energy loss must increase.

The energy loss must decrease.

The energy loss will neither increase nor decrease.