A car, initially at rest, moves along a straight road with constant acceleration such that it attains a velocity of 60 ft/s when s = 150 ft. Then after being subjected to another constant acceleration, it attains a final velocity of 100 ft/s when s = 325 ft. Determine the average velocity and average acceleration of the car for the entire 325-ft displacement.

[A].

v_{avg} = 80.0 ft/s, a_{avg} = 15.15 ft/s^{2}

[B].

v_{avg} = 45.2 ft/s, a_{avg} = 13.91 ft/s^{2}

[C].

v_{avg} = 80.0 ft/s, a_{avg} = 12.57 ft/s_{2}

[D].

v_{avg} = 55.0 ft/s, a_{avg} = 15.15 ft/s_{2}

Answer: Option B

Explanation:

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