PhysicsVector QuantityNCTB পদার্থবিজ্ঞান অধ্যায় ২ (গতি)
Acceleration
Bengali: ত্বরণ•Pronunciation: অ্যাক্সিলারেশন•Symbol: \vec{a}
Standard Definition:
The rate at which the velocity of an object changes with respect to time.
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
m/s^2 (meter per second squared)($m/s^2$ (মিটার/সেকেন্ড²))
Dimensional Analysis
CGS Unit
cm/s^2
📖 Physical Concept & Comprehensive Explanation
Acceleration occurs whenever a body experiences a change in velocity magnitude or direction over time. Negative acceleration (velocity decreasing over time) is called retardation or deceleration. Free-falling bodies accelerate under Earth's gravitational pull at approximately 9.8 m/s^2.
🎯 High-Yield Revision Points
- ✓Acceleration = (final velocity - initial velocity) / time.
- ✓Negative acceleration is termed deceleration or retardation.
- ✓SI unit is m/s^2; dimension is [L T^-2].
Use Online Solver for Acceleration
Compute step-by-step solutions, verify formulas, and plot interactive diagrams on biggan.me.
❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: What is acceleration and its unit?
Acceleration is the rate of change of velocity per unit time. Its SI unit is m/s^2.
Q2: What is deceleration?
Deceleration is negative acceleration, representing the rate at which an object slows down over time.