Motion In A Plane
Chapter Name : Motion In Plane |
Sub Topic Code : 101_11_04_07_03 |
Topic Name : Motion In A Plane |
|
Sub Topic Name : Acceleration |
|
Introduction
A body is said to
accelerate when its speed or direction of motion changes with time
Pre-Requisites:
Vectors,
Displacement, Displacement Vector, Velocity, Acceleration, Direction of
Acceleration
Activity:
Observe the
speed-o-meter when you travel in a car. When the pointer does not move, the car
is said to travel at a constant velocity. When the speed changes, the car is
said to accelerate. However, even if the car takes a turn at constant speed, it
is said to accelerate.
Real Life Question:
Which quantity
defines the change in speed or direction of a body?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Acceleration | Acceleration is the rate of change of velocity with respect to time. |
| Average Acceleration | The average acceleration over a time interval is the change in velocity divided by the time interval. |
| Instantaneous Acceleration | It is the acceleration of a body at any instant |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Races | Acceleration can be observed |
Real life uses :
Can
help us to analyse the motion of bodies mathematically
Places to visit :
Car races
Practical examples around us
| Examples | Explainations |
|---|---|
| Moving cars | The cars moving on the road are constantly moving and braking. They are said to accelerate. |
What you learn in Theory:
Analysis of acceleration
using vectors and calculus
What you learn in Practice:
When a body is said
to accelerate and when not.