- Calculate the efficiency of the human body if a person eats a hamburger containing 7.4822 kJ of
energy and the body uses 2021 J of energy for its necessary life processes,
A. 3.702%
B. 27.01%
C. 35.00%
D. 100.0%

Which of the following is an example of units for speed

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?