Solved Questions on Unit of Acceleration
Question 1: The velocity of an object changes from 18 km/h to 54 km/h in 20 seconds. Find out its acceleration in SI units.
Solution:
Here, we have,
Initial Velocity = 18 km/h and Final Velocity = 54 km/h
Time taken = 20 secs
Change in Velocity = (54-18) = 36 km/h
Converting the change in velocity to SI units, we get,
Change in Velocity = 36 x 5/18 = 10 m/s
We know that,
Acceleration = Change in Velocity/Time Taken
Acceleration = 10/20 = 0.5 m/s2
Thus, the acceleration of the object is found to be 0.5 m/s2.
Question 2: A body is moving in a circle of radius 5 meters with a speed of 20 m/s. Find out itâs centripetal acceleration.
Solution:
Here, v = 20 m/s and r = 5 m
We know that,
Centripetal Acceleration (ac) = v2/r
Thus, ac = (20)2/5 = 400/5 = 80 m/s2
Hence, the value of centripetal acceleration is obtained as 80 m/s2.
Unit of Acceleration
Unit of Acceleration is meter per second square or m/s2. Acceleration is the rate at which the velocity of a body changes. The most commonly used units of acceleration are meters per second square (m/s2) and kilometer per hour square (km/h2).
In this article, we will learn the definition of acceleration, the unit of acceleration, units in various systems, sample problems, and frequently asked questions related to the unit of acceleration.
Table of Content
- What is Unit of Acceleration?
- SI unit of Acceleration
- Unit of Acceleration in Other Systems
- C.G.S. Unit of Acceleration
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