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A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s?
Most Upvoted Answer
A body of mass 500 kg is thrown vertically upwards with a speed of 200...
Since in both the cases way up or down the acceleration is same 9.8 just with the direction changing....
since the point of consideration is the starting point itself, the distanced covered in both the cases are also same...
also the mass is undoubtedly a constant...
so the velocity is the same 200 m/s with it's direction reversed that is downwards.....
the answer is option B. 200 m/s
since the point of consideration is the starting point itself, the distanced covered in both the cases are also same...
also the mass is undoubtedly a constant...
so the velocity is the same 200 m/s with it's direction reversed that is downwards.....
the answer is option B. 200 m/s
Community Answer
A body of mass 500 kg is thrown vertically upwards with a speed of 200...
Given:
Mass of the body, m = 500 kg
Initial velocity, u = 200 m/s
To Find:
The speed of the body at the starting point on the return journey.
Solution:
1. Initial Calculation:
Let's calculate the maximum height reached by the body during its upward journey using the first equation of motion:
v^2 = u^2 - 2gh
Here, v = 0 (at maximum height), u = 200 m/s, and g = 9.8 m/s^2
So, 0 = (200)^2 - 2 * 9.8 * h
Simplifying the equation:
0 = 40000 - 19.6h
19.6h = 40000
h = 40000 / 19.6
h ≈ 2040.82 m
2. Calculation at Starting Point:
On the return journey, the body will cover the same distance downwards as it did upwards. So, when the body reaches the starting point again, it will have the same speed as it had when it was thrown upwards.
3. Final Answer:
Therefore, the speed of the body at the starting point on the return journey will be approximately 200 m/s, which is the same as the initial velocity. So, the correct option is B.
Mass of the body, m = 500 kg
Initial velocity, u = 200 m/s
To Find:
The speed of the body at the starting point on the return journey.
Solution:
1. Initial Calculation:
Let's calculate the maximum height reached by the body during its upward journey using the first equation of motion:
v^2 = u^2 - 2gh
Here, v = 0 (at maximum height), u = 200 m/s, and g = 9.8 m/s^2
So, 0 = (200)^2 - 2 * 9.8 * h
Simplifying the equation:
0 = 40000 - 19.6h
19.6h = 40000
h = 40000 / 19.6
h ≈ 2040.82 m
2. Calculation at Starting Point:
On the return journey, the body will cover the same distance downwards as it did upwards. So, when the body reaches the starting point again, it will have the same speed as it had when it was thrown upwards.
3. Final Answer:
Therefore, the speed of the body at the starting point on the return journey will be approximately 200 m/s, which is the same as the initial velocity. So, the correct option is B.
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A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s?
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A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s?.
A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A body of mass 500 kg is thrown vertically upwards with a speed of 200 m/s. On the return journey, it's speed at the starting point will be: A. 2000 m/s B. 200 m/s C. 980 m/s D. 1000 m/s?.
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