Q1) Two automobiles A and B are approaching each other in adjacent highway lanes. At t = 0, A and B are 1 km apart, their speeds are va = 108 km/h and vg = 63 km/h, and they are at points P and Q, respectively. Knowing that A passes point Q 40 s after B was there and that B passes point P 42 s after A was there, determine (a) the uniform accelerations of A and B, (b) when the vehicles pass each other, (c) the speed of B at that time. A 108 kin/l 63 km/r 1 km

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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.