a car accelerates from rest at 3 m / s^2 along a straight road. how far has the car travelled after 4 s

a car accelerates from rest at 3 m / s^2 along a straight road. how far has the car travelled after 4 s

0 thoughts on “a car accelerates from rest at 3 m / s^2 along a straight road. how far has the car travelled after 4 s”

  1. Answer:

    24 m

    Explanation:

    The motion of the car is a uniformly accelerated motion (=at constant acceleration), therefore we  can find the distance covered by using the following suvat equation:

    [tex]s=ut+\frac{1}{2}at^2[/tex]

    where

    s is the distance covered

    u is the initial velocity

    t is the time elapsed

    a is the acceleration

    For the car in this problem:

    u = 0, since the car starts from rest

    [tex]a=3 m/s^2[/tex] is the acceleration

    t = 4 s is the time elapsed

    Therefore, the distance covered is:

    [tex]s=0+\frac{1}{2}(3)(4)^2=24 m[/tex]

    Reply

Leave a Comment