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10 January, 21:36

In which of the following cases does a car have a negative velocity and a positive acceleration? A car that is traveling in the:

a. + x direction decreasing in speed.

b. - x direction at a constant 20 m/s.

c. - x direction decreasing in speed.

d. + x direction increasing in speed.

e. - x direction increasing in speed.

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  1. 10 January, 22:38
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    option C

    Explanation:

    The correct answer is option C.

    For negative velocity

    Negative velocity is when the velocity of the object in a negative direction.

    so, for the velocity of the car to be negative, it should be in - x-direction.

    For positive acceleration

    Positive acceleration is the change of the velocity of the object with respect to time in a positive direction

    but when the velocity of the object is in negative direction the slowing down of the vehicle will give positive acceleration.

    hence, the correct answer is an option - x-direction decreasing in speed.
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