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21 February, 08:44

A car initially at rest can accelerate at 7 m/s2. How long will it take the car to reach 60 m/s?

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Answers (2)
  1. 21 February, 09:20
    0
    Answer:8.57sec.

    Explanation: First you take the Acceleration Formula which is a = (vf-vi) / t and plug everything in to where you get 7m/s^2 = (60-0) / t. now you take that and rearrange it to t=60/7 which finally comes to your answer of 8.57sec.
  2. 21 February, 10:50
    0
    The answer to your question is t = 8.6 s

    Explanation:

    Data

    Initial velocity = vo = 0 m/s

    acceleration = a = 7 m/s²

    time = t = ?

    final velocity = vf = 60 m/s

    Formula

    vf = vo + at

    -Solve for t

    at = vf - vo

    t = (vf - vo) / a

    -Substitution

    t = (60 - 0) / 7

    -Simplification

    t = 60 / 7

    -Result

    t = 8.6 s
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