The driver of a car traveling at 30.5 m/s slams on the brakes so that the car undergoes a constant acceleration, skidding to a complete stop

Question

The driver of a car traveling at 30.5 m/s slams on the brakes so that the car undergoes a constant acceleration, skidding to a complete stop in 4.5 s. What is his average acceleration?
-2.6 m/s^2
2.6 m/s^2
6.8 m/s^2
-6.8 m/s^2

in progress 0
Thu Nguyệt 5 years 2021-07-15T16:01:12+00:00 1 Answers 14 views 0

Answers ( )

  1. Xavia
    0
    2021-07-15T16:02:28+00:00
    Reply

    Answer:

    -6.8 m/s²

    Explanation:

    Given:

    v₀ = 30.5 m/s

    v = 0 m/s

    t = 4.5 s

    Find: a

    a = (v − v₀) / t

    a = (0 m/s − 30.5 m/s) / 4.5 s

    a = -6.8 m/s²

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )