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brummy309506
31.08.2019 •
Physics
Which example identifies a change in motion that produces acceleration?
a. a ball moving at a constant speed around a circular track
b. a particle moving in a vacuum at constant velocity
c. a speed skater moving at a constant speed on a straight track
d. a vehicle moving down the street at a steady speed?
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Ответ:
Acceleration is the change in velocity. This change may be either on speed or on direction (or both).
A ball moving at a constant speed around a circular track is continously changing its direction so it is under acceleration (centripetal acceleration).
All the other cases are of objects moving at the constant speed and in straight line, i.e. constant velocity, which is not accelerating.
Ответ:
Esto se debe a que la soda está más caliente que el hielo, lo que hace que pase por su punto de fusión.
Explanation:
Me enteré de esto durante la clase de ciencias hace un par de años. jajaja