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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
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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.
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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.?
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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.?.
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