Class 9 Exam > Class 9 Questions > A car is travelling at 54km/h. If it's veloci...
Start Learning for Free
A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.?
Verified Answer
A car is travelling at 54km/h. If it's velocity increases at 72km/h in...
INITIAL VELOCITY = U = 54 km/h = 15 m/S
FINAL VELOCITY = V = 72 km/h = 20 m/s
TIME = T = 5 SECONDS
FINDING ACCELERATION (A)
------------------------------------------
V = U + AT. (FIRST EQ. OF MOTION)
20 = 10 + A*5
5A = 20 - 10
5A = 10
A = 10/5
A = 2 m/s2
THEREFORE,
ACCELERATION = 2 m/s2
This question is part of UPSC exam. View all Class 9 courses
Most Upvoted Answer
A car is travelling at 54km/h. If it's velocity increases at 72km/h in...
Initial velocity (u) = 54 km/h = 54 × 5 /18 = 15 m/s.final velocity (v) = 72 km /h = 72 × 5/18 = 20 m/s.time (t) = 5 s.Acceleration (a) = v - u/t a = 20 - 15/ 5a = 5/5 a = 1 m/s^2.
Community Answer
A car is travelling at 54km/h. If it's velocity increases at 72km/h in...
Given:
Initial velocity (u) = 54 km/h
Change in velocity (Δv) = 72 km/h
Time interval (t) = 5 s
To Find:
Acceleration (a) in SI units
Formula:
The formula to calculate acceleration is:
a = Δv / t
Solution:
First, we need to convert the given velocities from km/h to m/s, since the SI unit of velocity is meters per second (m/s).
1 km/h = 1000 m / 3600 s
=> 1 km/h = 5/18 m/s
So, the initial velocity (u) in m/s is:
u = 54 km/h * (5/18) m/s
=> u = 15 m/s
The change in velocity (Δv) in m/s is:
Δv = 72 km/h * (5/18) m/s
=> Δv = 20 m/s
Now, we can substitute the values into the formula to find the acceleration (a):
a = Δv / t
=> a = 20 m/s / 5 s
=> a = 4 m/s²
Therefore, the acceleration of the car is 4 m/s².
Initial velocity (u) = 54 km/h
Change in velocity (Δv) = 72 km/h
Time interval (t) = 5 s
To Find:
Acceleration (a) in SI units
Formula:
The formula to calculate acceleration is:
a = Δv / t
Solution:
First, we need to convert the given velocities from km/h to m/s, since the SI unit of velocity is meters per second (m/s).
1 km/h = 1000 m / 3600 s
=> 1 km/h = 5/18 m/s
So, the initial velocity (u) in m/s is:
u = 54 km/h * (5/18) m/s
=> u = 15 m/s
The change in velocity (Δv) in m/s is:
Δv = 72 km/h * (5/18) m/s
=> Δv = 20 m/s
Now, we can substitute the values into the formula to find the acceleration (a):
a = Δv / t
=> a = 20 m/s / 5 s
=> a = 4 m/s²
Therefore, the acceleration of the car is 4 m/s².
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
|
|
Top Courses for Class 9View all
A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.?
Question Description
A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? 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 A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.?.
A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? 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 A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.?.
Solutions for A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? 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 A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? defined & explained in the simplest way possible. Besides giving the explanation of
A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.?, a detailed solution for A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? has been provided alongside types of A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? theory, EduRev gives you an
ample number of questions to practice A car is travelling at 54km/h. If it's velocity increases at 72km/h in 5s , then find the acceleration of the car in SI units.? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
Test: The Fundamental Unit of Life- Case Based Type Questions- 1
Test | 10 questions
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