3. A roller-coaster car is moving over the top of a hill. At the instant it is on the hill top, it has a kinetic energy of E and a gravitational potential
energy of 3E. When it coasts down to ground level, if total mechanical energy is conserved, what is the kinetic energy of the car on the ground?
(A) 4E (B) 3E (C) 2E (D) E
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Which describes an object in projectile motion? check all that apply.a.gravity acts to pull the object downb.the object moves in a straight path.c.the forward velocity of the object is 0 m/s.d.the object’s inertia carries it forward.e.the path of the object is curved.
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Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical
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Which of the following statements correctly describes a transformer?
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3. A roller-coaster car is moving over the top of a hill. At the instant it is on the hill top, it h...
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