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A runner jogs a along a straight road (i...

A runner jogs a along a straight road (in the `+x` direction) for `30 min`, travelling a distance of `6 km`. She then turns around and walks back towards her starting point for `20 min`, travelling `2 km` during this time. State true// false:
a. The final displacement of the entire trip is `0`. `16 km min^(-1)` .
b. Her average speed for the entire is `0.16 km min^(-1)`.
c. The average velocity for the entire trip is `0.4 km min^(-1)`.
d. The runner`s average velocity while jogging is `0.4 km min^(-1)`.
e. Her average velocity while walking is `0.1 km min^(-1)`.

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The correct Answer is:
To solve the problem, let's analyze the runner's journey step by step. ### Step 1: Calculate the total distance traveled The runner jogs 6 km in the positive x direction and then walks back 2 km towards the starting point. - **Total distance** = Distance jogged + Distance walked back - **Total distance** = 6 km + 2 km = 8 km ### Step 2: Calculate the total time taken The time taken for jogging is 30 minutes and the time taken for walking back is 20 minutes. - **Total time** = Time jogging + Time walking back - **Total time** = 30 minutes + 20 minutes = 50 minutes ### Step 3: Calculate the final displacement Displacement is the shortest distance from the initial position to the final position. The runner starts at point O (0 km), jogs to point P (6 km), and then walks back to point Q (4 km). - **Final displacement** = Final position - Initial position - **Final displacement** = 4 km - 0 km = 4 km ### Step 4: Determine if the statements are true or false Now, let's evaluate each statement: a. **The final displacement of the entire trip is 0.16 km.** - **False**. The final displacement is 4 km. b. **Her average speed for the entire trip is 0.16 km/min.** - **True**. Average speed = Total distance / Total time = 8 km / 50 min = 0.16 km/min. c. **The average velocity for the entire trip is 0.4 km/min.** - **False**. Average velocity = Total displacement / Total time = 4 km / 50 min = 0.08 km/min. d. **The runner's average velocity while jogging is 0.4 km/min.** - **True**. Average velocity while jogging = Distance jogged / Time jogging = 6 km / 30 min = 0.2 km/min. e. **Her average velocity while walking is 0.1 km/min.** - **True**. Average velocity while walking = Distance walked / Time walking = 2 km / 20 min = 0.1 km/min. ### Summary of the statements: - a: False - b: True - c: False - d: False - e: True

To solve the problem, let's analyze the runner's journey step by step. ### Step 1: Calculate the total distance traveled The runner jogs 6 km in the positive x direction and then walks back 2 km towards the starting point. - **Total distance** = Distance jogged + Distance walked back - **Total distance** = 6 km + 2 km = 8 km ...
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