Physics, 20.03.2020 13:04, pricillakalaniuvalu
A car starts at the top of a hill with 200 J of energy, and rolls down a frictionless surface. The isolated system consists of the car, hill, and earth. What happens to the energy of the system as the car moves down the hill?
The total energy stays the same but is converted from being stored as kinetic energy into elastic potential energy as it moves.
The total energy stays the same but is converted from being stored as gravitational potential energy into kinetic energy of the car as it moves.
The total energy decreases and is converted from being stored as gravitational potential energy into kinetic energy as it moves.
The total energy decreases and is converted from being stored as elastic potential energy into kinetic energy as it moves.
Answers: 3
Physics, 22.06.2019 02:00, LadyHolmes67
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
Answers: 3
Physics, 22.06.2019 18:00, itsyagirl11076
Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?
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Physics, 22.06.2019 22:30, quan1541
Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b
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A car starts at the top of a hill with 200 J of energy, and rolls down a frictionless surface. The i...
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