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,

⇒ ⇒ .

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.