Class 11 Exam > Class 11 Questions > From the top Of a building , 39.2m tall , a b...
Start Learning for Free
From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection?
Most Upvoted Answer
From the top Of a building , 39.2m tall , a boy projects a stone verti...
Problem:
A boy projects a stone vertically upward from the top of a building, 39.2m tall, with an initial velocity of 9.8 m/s. When will the stone pass through the point of projection?
Solution:
Step 1: Analyze the problem
To solve this problem, we need to use the kinematic equations of motion. We know that the stone is projected vertically upward, so the acceleration due to gravity will act in the opposite direction to the initial velocity. We also know that the final displacement of the stone will be zero when it passes through the point of projection.
Step 2: Determine the variables
We can use the following variables to solve the problem:
- u = initial velocity = 9.8 m/s
- v = final velocity = 0 m/s
- a = acceleration due to gravity = -9.8 m/s^2
- s = displacement = -39.2 m (negative because the stone is moving downward)
- t = time
Step 3: Apply the kinematic equations
We can use the following kinematic equation to solve for time:
s = ut + (1/2)at^2
Plugging in the values, we get:
-39.2 = 9.8t + (1/2)(-9.8)t^2
Simplifying and solving for t, we get:
t = 4 seconds
Step 4: Interpret the result
Therefore, the stone will pass through the point of projection after 4 seconds.
Community Answer
From the top Of a building , 39.2m tall , a boy projects a stone verti...
Let us consider top of building as frame of reference. according to time of flight formula i.e., T=2u/g given: u=9.8m/s T=2×9.8/9.8=2 T=2s here time of flight is the time after which the projected stone pass the point of projection. therefore ans is 2s
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Similar Class 11 Doubts
Top Courses for Class 11View all
From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection?
Question Description
From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? 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 From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection?.
From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? 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 From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection?.
Solutions for From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? defined & explained in the simplest way possible. Besides giving the explanation of
From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection?, a detailed solution for From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? has been provided alongside types of From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? theory, EduRev gives you an
ample number of questions to practice From the top Of a building , 39.2m tall , a boy projects a stone vertically upward with an initial velocity of 9.8 m/s such that it finally drops to the ground . When will it pass through the point of projection? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup