A roller coaster car travels up and down the hills of its track. Neglecting

Physics

1 answer:

Volgvan2 years ago

7 0

Answer:

option D is the correct option

Must always remain constant

Explanation:

According to their law of conservation of energy :it states that in a closed system,the total mechanical energy is always constant although energy may change from one form to another. e. g from potential energy to kinetic energy

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