A racecar driver on a flat racetrack steps on the gas, changing her velocity from 10 m/sec to 30 m/sec in 5 seconds. What is the acceleratio

Question

A racecar driver on a flat racetrack steps on the gas, changing her velocity from 10 m/sec to 30 m/sec in 5 seconds. What is the acceleration of the racecar during that time frame?

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Mộc Miên 2 months 2021-07-30T22:03:57+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-07-30T22:05:03+00:00

    Answer:

    4m/s2

    Explanation:

    The following data were obtained from the question:

    U (initial velocity) = 10m/s

    V (final velocity) = 30m/s

    t (time) = 5secs

    a (acceleration) =?

    Acceleration is the rate of change of velocity with time. It is represented mathematically as:

    a = (V – U)/t

    Now, with this equation i.e

    a = (V – U)/t, we can calculate the acceleration of the race car as follow:

    a = (V – U)/t

    a = (30 – 10)/5

    a = 20/5

    a = 4m/s2

    Therefore, the acceleration of the race car is 4m/s2

    0
    2021-07-30T22:05:53+00:00

    Answer:

    a = 4\,\frac{m}{s^{2}}

    Explanation:

    The acceleration of the racecar is:

    a = \frac{v-v_{o}}{\Delta t}

    a = \frac{30\,\frac{m}{s} - 10\,\frac{m}{s} }{5\,s}

    a = 4\,\frac{m}{s^{2}}

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