How can you tell is energy has been transferred or transformed

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

What energy transformations occur each time the skateboarder rolls up the ramp?

The applied force of 3 washers will increase the applied force on the car to n.