Use vectors to solve the following problems.  Both cars weigh 1500 kg.  Use the scale 1 cm = 1,000 kg x m/s.  Assume all collisions to be sticking. Draw a picture represents the problem too. The first car is travelling at 20 m/s east.  The second car is travelling at 30m/s north. Using vectors draw to scale the component vectors and the resultant from their collision. Then solve using your trigonometric functions. Also: use Pythagorean Theorem (to find magnitude/resultant), inversed tangent (to find direction/angle) because vectors = magnitude & direction, and use formula: momentum = mv(before) = mv(after)

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Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.