Two American football players with a mass of 75 kg and a mass of 100 kg towards each other at a speed of 6 m/sec and 8 m/sec respectively they run. Immediately after hitting each other, they move together at the same speed. Two footballers killed after collision which of the following is its speed?

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A: Initial velocity of car, Vo = 60 mph = 60*1.46667 ft/s = 88 ft/s      { 1 mph = 1.46667 ft/s }…

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A: For solution refer below images.

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Q: During that move, how hard was Sofia pulling Boris?

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.