For the section shown of a race track, the two race cars travel atconstant speeds. At the instant shown, the front ends of both carscross lineCCat the same time. For the curved section (θ= [θ]°,r1= [r1]m, andr2= [r2]m), both drivers drive at the maximumspeed that their car and tyres allow. Consequently, the maximumlateral (sideways) acceleration of carsAandBare [k1]gand [k2]grespectively whereg=9.81 m/s2. When the second car (notnecessarily carB) crosses lineDD, how far is it behind the firstcar? Assume the race track is straight afterDDand both carsmaintain their speeds. Ignore the horizontal distance between thecars.

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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.