The speed of the lift is 5 m / s, during how long this speed is reached if the lift is moving with an acceleration of 4 m / s2.

To determine the duration of acceleration of the used elevator to a given speed, we use the formula: t = (V – V0) / a.

Variable values: V – required speed (V = 5 m / s); V0 – speed before the start of acceleration (V0 = 0 m / s); a – acceleration of the used elevator (a = 4 m / s2).

Calculation: t = (V – V0) / a = (5 – 0) / 4 = 1.25 s.

Answer: The elevator used will reach a speed of 5 m / s in 1.25 s.



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