Class 8 Speed Distance Time Case Study Questions PDF

Class 8 Speed Distance Time Case Study Questions PDF

Class 8 Speed Distance Time Case Study Questions PDF

The Class 8 Speed Distance Time Case Study Questions PDF helps students understand motion-related concepts through real-life examples. Moreover, each case study includes step-by-step explanations to simplify complex calculations. This makes learning more engaging and effective.

Why These Case Studies Are Important

These worksheets strengthen conceptual clarity while improving accuracy in solving problems. Furthermore, they cover essential topics like average speed and relative speed. As a result, students build confidence and develop better analytical skills.

How to Practice Effectively

Students should read the data carefully, convert units when needed, and apply formulas correctly. Additionally, consistent practice helps improve speed and supports exam preparation.

Case Study 3: Work Efficiency and Speed, Distance, Time

A small community center received an urgent request to prepare **840 identical relief kits** for distribution after a storm. Manager Ramesh assigns three volunteers: **Ramesh** himself, **Sita** and **Tanvi**. From earlier experience **Ramesh can pack 28 kits per hour**, **Sita can pack 36 kits per hour** and **Tanvi can pack 21 kits per hour**.

They start packing together at 8:00 a.m. After packing together for a few hours, Tanvi is called away to help at another relief point and leaves. Ramesh and Sita continue until the job is finished. Once packing is completed, Ramesh drives a loaded van to a distribution hub **240 km** away. On the route he encounters slow roads for the first **80 km** and travels that part at a constant **40 km per hour**. After clearing the slow stretch he speeds up for the rest of the journey. The situation requires computing combined work rates, partial work done in given hours, remaining work and time when one worker leaves, and speed-distance-time calculations for the trip. Answer the MCQs that follow based strictly on the data given above.

MCQ Questions

  1. 1. What is the combined packing rate of Ramesh, Sita and Tanvi in kits per hour?

  2. 2. If all three worked together for 4 hours, how many kits would they have packed by then?

  3. 3. After Tanvi leaves following the first 4 hours, how long will Ramesh and Sita together take to finish the remaining kits?

  4. 4. Ramesh drove the first 80 km at 40 km per hour. How much time did he spend on this part?

  5. 5. The remaining distance of the 240 km trip was covered in 2 hours. What was Ramesh’s speed for the second part?

Quiz Results

Total Questions: 5

Correct Answers: 0

Incorrect Answers: 5

Total Marks: 10

Your Score: 0 / 10

Percentage Score: 0%


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