Which of these has the most chemical energy? a. a candy bar b. a gold brick c. a gallon of milk d. a gallon of gasoline

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?

Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?

What is the difference between mass density and weight density?