Two cars are traveling along a straight line in the same direction, the lead car at 25 m/s and the other car at 38 m/s. at the moment the cars are 45 m apart, the lead driver applies the brakes, causing the car to have a deceleration of 1.5 m/s2 . how long does it take for the lead car to stop?

It will take for the lead car to stop.

Explanation:

Stage 1: The car moves at constant speed .

Stage 2: the car accelerates with (the negative sign means it's decelerating with respect to the direction is moving).

¿When will be the velocity be ?

From Kinematics:

So, if final velocity is

then,

⇒ ⇒ .

1 the 4 is sig

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