You are driving a car at a constant velocity on a flat, straight portion of the

Question

You are driving a car at a constant velocity on a flat, straight portion of the highway. Two car-lengths in front of you is a large truck moving at the same velocity as your car. Suddenly, the truck brakes, slowing down at a constant rate. When the truck is only one car-length away from you, you apply your brakes, slowing down at the same constant rate as the truck. Which of the following statements is true while you are applying the brakes?

(A) The distance between your car and the truck will decrease over time.

(B) The distance between your car and the truck will increase over time.

(C) The distance between your car and the truck will remain one-car length.

(D) The answer depends on the value of the braking acceleration.

Explanation / Answer

Since when we apply brakes car would be moving at a faster rate as compared to the truck so over time distance travelled by car will be greater as compared to that of truch hence

(A) The distance between your car and the truck will decrease over time.

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