IOM 2019, Блиц — Задача 34

OLYMPIAD OF METROPOLISES, Moscow, September 2, 2019 · 2 септември 2019 г.

Условие

A truck, which has a mass of 3750 kg, moves at a speed of 54 km/h. When it arrives to a road intersection, it crashes with a car, which is moving at 90 km/h perpendicularly to the truck. The mass of the car is 1250 kg. Determine the percentage of energy lost in the collision, considering both vehicles are moving together after they have crashed.

The answer should be given in the SI units unless otherwise stated. If the numerical result turns out to be an integer, it should be given as the answer. Otherwise round the result to the first decimal. $g = 10\ \mathrm{m/s^2}$.

Решение

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Оригинал в Архива: blitz-en-all-task-final.pdf