You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 680.0 kg and was traveling eastward. car b weighs 510.0 kg and was traveling westward at 72.0 km/h. the cars locked bumpers and slid eastward with their wheels locked for 6.00 m before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750. 1) how fast (in kilometer per hour) was car a traveling just before the collision? (express your answer to three significant figures.

Explanation:

In order to know the velocity of the cars after the collision, we must calculate the acceleration after the collision. According to Newton's second law:

Using the following kinematics equation, we calculate the initial velocity which is the same velocity after collision, so, the final velocity is zero since the cars stopped after 6 meters:

According to the law of conservation of momentum and solving for :

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!