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Can you explain the answer of this question below:
A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/s
- A:6.61
- B:5.61
- C:7.61
- D:8.61
The answer is a.
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Can you explain the answer of this question below:A truck covers 40.0 ...
**Given:**
- Distance covered, d = 40.0 m
- Time taken, t = 8.50 s
- Final speed, vf = 2.80 m/s
**To find:**
- Original speed, vi
**Formula:**
The formula relating distance, time, initial speed, and final speed is:
d = (vi + vf)/2 * t
**Calculation:**
Substituting the given values into the formula, we have:
40.0 = (vi + 2.80)/2 * 8.50
Multiplying both sides by 2:
80.0 = (vi + 2.80) * 8.50
Distributing the 8.50:
80.0 = 8.50vi + 8.50(2.80)
Simplifying:
80.0 = 8.50vi + 23.8
Subtracting 23.8 from both sides:
56.2 = 8.50vi
Dividing both sides by 8.50:
vi = 56.2/8.50
Calculating the value:
vi ≈ 6.61 m/s
Therefore, the original speed of the truck is approximately 6.61 m/s.
Hence, the correct answer is option A) 6.61.
- Distance covered, d = 40.0 m
- Time taken, t = 8.50 s
- Final speed, vf = 2.80 m/s
**To find:**
- Original speed, vi
**Formula:**
The formula relating distance, time, initial speed, and final speed is:
d = (vi + vf)/2 * t
**Calculation:**
Substituting the given values into the formula, we have:
40.0 = (vi + 2.80)/2 * 8.50
Multiplying both sides by 2:
80.0 = (vi + 2.80) * 8.50
Distributing the 8.50:
80.0 = 8.50vi + 8.50(2.80)
Simplifying:
80.0 = 8.50vi + 23.8
Subtracting 23.8 from both sides:
56.2 = 8.50vi
Dividing both sides by 8.50:
vi = 56.2/8.50
Calculating the value:
vi ≈ 6.61 m/s
Therefore, the original speed of the truck is approximately 6.61 m/s.
Hence, the correct answer is option A) 6.61.
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Can you explain the answer of this question below:A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/sA:6.61B:5.61C:7.61D:8.61The answer is a. for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Can you explain the answer of this question below:A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/sA:6.61B:5.61C:7.61D:8.61The answer is a. covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/sA:6.61B:5.61C:7.61D:8.61The answer is a..
Can you explain the answer of this question below:A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/sA:6.61B:5.61C:7.61D:8.61The answer is a. for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Can you explain the answer of this question below:A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/sA:6.61B:5.61C:7.61D:8.61The answer is a. covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. Find its original speed in m/sA:6.61B:5.61C:7.61D:8.61The answer is a..
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