Physics, 25.03.2021 06:40 81074

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

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 08:30, fernandoramirez086

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Answers: 3

continue

Physics, 22.06.2019 09:00, pancho99

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

Answers: 2

continue

Physics, 22.06.2019 12:00, drivinghydra

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Answers: 3

continue

Physics, 22.06.2019 14:00, astigall4272

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Answers: 1

continue

You know the right answer?

3. A roller-coaster car is moving over the top of a hill. At the instant it is on the hill top, it h...