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A car was traveling on a straight road at a constant speed of 50 kilometers per hour. Over the next two minutes, the car came to travel 80 kilometers an hour. Which of the following is true?

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The acceleration of the car over the 2 minutes is 0.07 m/s².

Acceleration of the car

The acceleration of an object is the rate of change of velocity of the object with time.

Acceleration of the car over the 2 minutes

The acceleration of the car over the 2 minutes is calculated as follows;

a = Δv/t

a = (v - u) / t

where;

  • v is the final velocity = 80 km/h = 22.22 m/s
  • u is the initial velocity = 50 km/h = 13.89 m/s
  • t is the time of motion, = 2 mins = 120 s

a = (22.22 - 13.89) / 120

a = 0.07 m/s²

Thus, the acceleration of the car over the 2 minutes is 0.07 m/s².

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