A 1200 kg racing car accelerates from rest at a constant rate and covers a distance of 450 m in 15 s. What is the car’s acceleration

Question

A 1200 kg racing car accelerates from rest at a constant rate and covers a distance of 450 m in 15 s. What is the car’s acceleration

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Thu Cúc 4 years 2021-07-31T14:28:52+00:00 1 Answers 13 views 0

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  1. Sapo1
    0
    2021-07-31T14:29:58+00:00
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    Answer:

    2 m/s²

    Explanation:

    Given that

    mass of the car, m = 1200 kg

    Initial velocity of the car, u = 0 m/s

    Distance covered, s = 450 m

    Time taken, t = 15 s

    Final velocity of the car, v = s/t = 30 m/s

    there are four equations of motion. In this question, we will be attempting to solve it using the first equation of motion to solve this question

    v = u + at, where

    v = final velocity

    u = initial velocity

    a = acceleration

    t = time taken

    v = u + at

    30 = 0 + 15a

    30 = 15a

    a = 30/15

    a = 2 m/s

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