The braking distance (in meters) for a certain car moving at velocity (in meters/second) is given by . The car’s velocity (in meters/second)

Question

The braking distance (in meters) for a certain car moving at velocity (in meters/second) is given by . The car’s velocity (in meters/second) seconds after starting is given by . Write a formula for the braking distance (in meters) after seconds. It is not necessary to simplify.

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Savannah 1 week 2021-10-12T10:37:43+00:00 1 Answer 0

Answers ( )

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    2021-10-12T10:39:12+00:00

    Answer:

    s = -u²/2a

    Step-by-step explanation:

    v² = u² + 2as

    Where,

    v = 0

    u is the velocity it was moving with

    a = deceleration = Braking force/mass

    Therefore,

    0 = u² + 2as

    s = -u²/2a

    This is positive because a is negative

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