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An elevator with a person inside is traveling upwards at a velocity of +5 m/s and accelerating downwardwith an acceleration of -4 m/s^2.Is the speed of the person is increasing, decreasing, or constant?

Sagot :

When the elevator moves in the upward direction with some velocity and it has negative acceleration then it means the speed of elevator is decreasing when the elevator moves. Since the speed of person depends upon the speed of elevator therefore, the speed of person is also decreasing.