Question

An object moved in a positive x direction at an initial speed of 5.3m/s if the object experiences an acceleration of 0.5m/s in the negative X. direction after how long a time, will the object gave a negative velocity

Answer 1

Answer: 10.6s

Explanation:

V = u + at = 5.3 + (-0.5)t

t = 10.6s

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Answer 2

Answer:

Object will have negative velocity after time t = 10.6 s

Explanation:

Let u = initial velocity = 5.3 m/s

Let v = final velocity = 0 m/s

Let a = acceleration of object = -0.5 m/s2

Let t = time required for object to have the velocity v.

t = (v - u)/a = (0 m/s - 5.3 m/s) / (-0.5 m/s2) = 10.6 s

t = 10.6 s ------------------------(answer)

Answer: The object will have negative velocity after the duration of time given by, t = 10.6 s