Newton's Second Law Of Motion
Chapter Name : Laws Of Motion |
Sub Topic Code : 101_11_05_05_02 |
Topic Name : Newton's Second Law Of Motion |
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Sub Topic Name : Impulse |
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Introduction
What happens when a large force act for a short time.
Pre-Requisites:
Knowledge about motion and momentum.
Activity:
Throw the ball to the wall and try to catch it. Comment on how the direction of the ball changed.
Real Life Question:
Why does a ball bounce back when hit by a wall?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Impulsive force | A large magnitude force act for a short time. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Ball and cricket bat | See how ball changes its speed and direction when hit by a cricket bat. |
Real life uses :
To calculate the force.
Places to visit :
Everywhere you want.
Practical examples around us
| Examples | Explainations |
|---|---|
| cricket | In the game of cricket when a batsman hit a ball, its an example of the impulsive force. |
What you learn in Theory:
A large force acting for a short time to produce a finite change in momentum is called an impulsive force.
What you learn in Practice:
We can usually calculate the time during which this impulse acts, but we calculate the product of the force and time and that is equal to the change in momentum of any body.