1. Define die term scalar 2. Calculate the total time it takes the coach to walk from A to D . 3. Calculate the total distance the coach has walked from A to D . 4. Determine the DISPLACEMENT of the coach from A to D by means of an accurate CONSTRUCTION of the different vectors in which you use the tail-to-head method. Use a scale where 1 cm represents 10 m 5. Calculate the average speed of the coach between A and D . 6. Convert the speed you have calculated in question 2.1 .5 to km . \( \mathrm{h}^{-1} \) 7. How does the magnitude of the coach's average velocity between A and D compare with his average speed between A and D ? Write down only GREATER THAN, LESS THAN or SAME AS. 8. Explain your answer in question 7 without doing a calculation. 9. Define the term displacement.
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To understand scalars a bit more, think of them as the straightforward friends of the physics world. Scalars only have magnitude, which means they can be represented by a single number with a unit (like 5 meters or 30 seconds), but they don’t care about direction. This simplicity makes scalars essential in calculations involving temperature, mass, and time, where direction just doesn’t play a role! Now, when we look at displacement, it’s the superstar of the position world, combining both distance and direction. It’s defined as the shortest distance from the initial point to the final point, often represented as a straight line with a specific direction. So, if you walked in a big loop, your distance could be much greater than your displacement, which remains the straight-line distance between your starting and ending points. This means that while you might have taken a long scenic route, your displacement would just reflect your net change in position!
