Class 9 Exam > Class 9 Questions > An object starting from rest Travels 120 m in...
Start Learning for Free
An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start?
Most Upvoted Answer
An object starting from rest Travels 120 m in first 2 sec and 260m in ...
Calculating velocity of an object
- Step 1: Calculate the acceleration of the object during the first 2 seconds using the formula:
acceleration = (change in velocity) / (time taken)
- Step 2: Use the acceleration calculated in step 1 and the time taken in step 1 to calculate the velocity of the object after 2 seconds using the formula:
final velocity = initial velocity + (acceleration x time taken)
- Step 3: Calculate the acceleration of the object during the next 4 seconds using the formula:
acceleration = (change in velocity) / (time taken)
- Step 4: Use the acceleration calculated in step 3 and the time taken in step 3 to calculate the velocity of the object after 6 seconds using the formula:
final velocity = initial velocity + (acceleration x time taken)
Using the given information:
- Distance travelled in the first 2 seconds = 120 m
- Distance travelled in the next 4 seconds = 260 m
- Initial velocity = 0 m/s
- Time taken to travel first 2 seconds = 2 s
- Time taken to travel next 4 seconds = 4 s
Calculating acceleration during the first 2 seconds:
- Acceleration = (Change in velocity) / (Time taken)
- Acceleration = (Final velocity - Initial velocity) / (Time taken)
- Acceleration = (120 m/s - 0 m/s) / (2 s)
- Acceleration = 60 m/s^2
Calculating velocity after 2 seconds:
- Final velocity = Initial velocity + (Acceleration x Time taken)
- Final velocity = 0 m/s + (60 m/s^2 x 2 s)
- Final velocity = 120 m/s
Calculating acceleration during the next 4 seconds:
- Acceleration = (Change in velocity) / (Time taken)
- Acceleration = (Final velocity - Initial velocity) / (Time taken)
- Acceleration = (260 m - 120 m) / (4 s)
- Acceleration = 35 m/s^2
Calculating velocity after 6 seconds:
- Final velocity = Initial velocity + (Acceleration x Time taken)
- Final velocity = 0 m/s + (35 m/s^2 x 6 s)
- Final velocity = 210 m/s
Therefore, the velocity of the object after 6 seconds is 210 m/s.
Community Answer
An object starting from rest Travels 120 m in first 2 sec and 260m in ...
U=0. s1 = 20m, s2= 160m. t1=2sec. , t2=4sec. s= 20+160=180m. t=2+4=6sec. Using formula, s=ut+1/2at2. 180=0*6+1/2*a*6 square. 180=18 a. a=180/18. =10m/s2. t=7sec. v=u+at. =0+10*7. =70m/s.
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start?
Question Description
An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start?.
An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start?.
Solutions for An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? defined & explained in the simplest way possible. Besides giving the explanation of
An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start?, a detailed solution for An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? has been provided alongside types of An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? theory, EduRev gives you an
ample number of questions to practice An object starting from rest Travels 120 m in first 2 sec and 260m in next 4 seconds. find its velocity in 6 seconds after start? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 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
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup