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A commuter backs her car out of her garage with a constant acceleration of 1.20 m/s2. (a) How long in seconds does it take her to reach a speed of 1.90 m/s

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asuwafohjames

The time in seconds it will take her to reach a speed of 1.9 m/s is 1.58s.

What is time?:

Time can be defined as the measurable period or duration, during which an action, process, or condition exists or continue.

The time taken for the commuter to reach a speed of 1.9 m/s, can be calculated using the formula below.

Formula:

  • a = (v-u)/t................. Equation 1

Where:

  • a = acceleration of the commuter
  • v = final velocity of the commuter
  • u = initial velocity of the commuter
  • t = time taken for the commuter to reach the speed.

make t the subject of equation 1

  • t = (v-u)/a................. Equation 2

From the question,

Given:

  • v = 1.90 m/s
  • a = 1.2 m/s²
  • u = 0 m/s

Substitute these values into equation 1.

  • t = (1.9-0)/1.2
  • t = 1.58 s.

Hence, The time in seconds it will take her to reach a speed of 1.9 m/s is 1.58s

Learn more about time here: https://brainly.com/question/4931057

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