1. Which of the following statements isnot trueaccording to the law of conservation of energy?

	a. Energy cannot be created or destroyed.
	b. The total energy of a system can change without any input or output of energy.
	c. Energy can be transformed from one form to another
	d. Energy can be transferred from one place to another.

2. Determine the kinetic energy (KE) or potential energy (PE) of the skier at each labeled point in the picture below. Estimate the height of the skier at labeled point 4. (Assume that friction is negligible.)

\fF1 = ( )N/ F2 = ( )N F3 = ( )N F4 =( )N / F1 = ( )N CO -1 IN F3 = ( )N Listen -F4 =[ IN F = 10N F = 10N F = 10N F = 10N h1 =( )cm h2=( jem h3 = ( )cm h4 = ( )cm