Physics Marathon Class | Sohag Vai | UDVASH উদ্ভাস-উন্মেষ শিক্ষা পরিবার Physics Marathon Class Recap I’m excited and nervous about today’s physics marathon class. I don’t recall much about physics, but I’m determined to do well. Let’s get started! Vector Problems Most students struggle with understanding the difference between scalars and vectors. A scalar has only magnitude, while a vector has both magnitude and direction. For example, displacement is a vector quantity because it has both magnitude and direction. On the other hand, speed is a scalar quantity because it only has magnitude. Problem 1: Finding the Resultant Vector In this problem, we have a vector with a magnitude of 45 cm. We need to find the square of the magnitude of the vector. The formula to find the magnitude of a vector is: |a|^2 = a_x^2 + a_y^2 + a_z^2 Using this formula, we can calculate the magnitude of the vector: a_x = 45 a_y = 0 a_z = 0 Plugging these values into
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