Question

A 2000 kg Cadillac had just started its march from a stop sign when it was struck from behind by a 1000 kg Volkswagen. The bumpers locked, and the two cars slid together until they stopped. Officer Tom, responding to the accident, measured that skid marks were 3.0 m long. The driver also testified that the speed of the Cadillac just before the impact was 5.0 m / s. Officer Tom accused Volkswagen of driving recklessly. Should the Volkswagen driver also be accused of exceeding the speed limit of 50 km / h? The judge calls him as an "expert witness" to analyze the evidence. What is your conclusion?

- It shows a detailed diagram (design) of the situation, where it shows the conditions before and after

Answer 1

Mvw is mass of Volkswagen .

Mv is mass of Cadillac.

Vivw is initial velocity of Volkswagen.

Vic is initial velocity if Cadillac.

Vf is final velocity after collision.

F_{​​​​​​k} is frictional force.

The diagram is not visible , but as last time i solved this the coefficient of kinetic friction was 0.8 so i have assumed it. If the value of coefficient is different , simply substitute the value in the * equation and you will get the result.

For any doubts , please ask in comment section.