Aroller coaster track is a good example of the law of conservation of energy. use this law to explain these facts about a roller coaster track. a. the largest hill for a roller coaster track is the first hill on the track. the hills after the first are smaller and smaller. b. to get to the top of the first (highest) hill, a motor pulls the cars up to the top. after the top of the first hill, a motor is not needed to keep the cars going. c. the roller coaster car moves really fast at the bottom of a hill on the track but slows down as it moves up a hill (not including the first hill).

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)