An object moves along a straight line with an initial velocity of 8 m/s with constant acceleration of 0.4m/s^2 for 40 s. a. what

Question

An object moves along a straight line with an initial velocity of 8 m/s with constant acceleration of 0.4m/s^2 for 40 s.

a. what is the velocity at the end of 40 s?

b. What is the distance traveled in this time?

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Cherry 3 years 2021-07-18T12:42:02+00:00 1 Answers 8 views 0

Answers ( )

  1. phucdien
    0
    2021-07-18T12:43:56+00:00
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    Answer:

    • 24 m/s
    • 640 m

    Explanation:

    a) Velocity increased at the rate of 0.40 m/s^2 for 40 s, so increased by …

      (0.40 m/s^2)(40 s) = 16 m/s

    The final velocity is …

      8 m/s + 16 m/s = 24 m/s

    __

    b) The average velocity over the 40 s period is (8 m/s +24 m/s)/2 = 16 m/s, so the distance traveled is …

      (16 m/s)(40 s) = 640 m

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