Physics, 17.02.2022 04:00 eguzmandpandoracom
In 2016 there were 2,025 reported collisions between trains and cars that resulted in 265 fatalities. Explain the change in kinetic energy as it relates to conservation of momentum. A) The train doesn't experience any change in kinetic energy or momentum since its mass is much greater than the car. B) The car and train experience the same change in kinetic energy and the momentum of the system is the same before and after the collision. C) The car doesn't experience any change in kinetic energy or momentum, however, its direction of velocity is changed by the force of the collision. D) The car experiences a much greater change in kinetic energy after the collision, but the individual momentum of the car and train aren't changed by the collision.
Answers: 2
Physics, 21.06.2019 22:20
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
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Physics, 22.06.2019 04:30
Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?
Answers: 1
Physics, 22.06.2019 09:00
One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form
Answers: 1
In 2016 there were 2,025 reported collisions between trains and cars that resulted in 265 fatalities...
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