Physics, 30.01.2020 07:56 katiegresham2838
Atrain is traveling at an average speed of 80 km/h. which additional quantity would you need to know to calculate the distance the train has traveled based on its average speed?
a. velocity
b. position
c. acceleration
d. time traveled
Answers: 1
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Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?
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Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
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Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.
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How much work would it take to move a coulomb charge across a 4 volt potential difference?
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Atrain is traveling at an average speed of 80 km/h. which additional quantity would you need to know...
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