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11 November, 21:38

1.

A poorly tuned Yugo can accelerate from rest to a speed of 28 m/s in

20 s.

a) What is the average acceleration of the car?

b) What distance does it travel in this time?

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Answers (1)
  1. 11 November, 22:08
    0
    The average acceleration of the car is 1.4 m / s^2. The distance travel at this time is 560 m.

    Explanation:

    Average acceleration is defined as the rate of change of velocity to the rate of change of period. Change of velocity refers to the difference between final velocity and initial velocity. The unit of acceleration is meter/sec/sec (or) m s^2.

    Avg Acceleration = (Final velocity - Initial velocity) / (Final time - Initial time)

    a. To find the average acceleration of the car, (initial velocity and initial time is 0, the final velocity is 28 m/s, final time = 20 s)

    Avg acceleration of the car = (28 - 0) / (20 - 0)

    = 28 / 20 = 1.4 m / s^2.

    b. The distance traveled is given by the product of speed and time

    Distance traveled = Speed * Time

    The Distance traveled by the car = 28 * 20 = 560 m.
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