IMPULSIVE FORCE

Tutor: PUAN NAHARIAH YAHAYA

Group Members: ONG YONG SENG( GROUP LEADER )

CHENG BENG TATTELWIN HENGLIM ZHIYONG

OOI ZHONG KAI

SMK SEBERANG JAYAYEAR 2012

Introduction

What causes the car to be bumped when

there are collision occurred between the car

and an object?

Impulsive force is the enormous amount of

force acting for a very small time on a body

mv-mut

F=

For example ,A karate expert can break

thick wooden slab with his bare hand that

moves at a very fast speed. The short

impact time results in a large impulsive

force on the wooden slab.

The karate expert hits the stone swiftly . Therefore, force is bigger.

Problem Statement

What are the factors that influence the amount of Impulsive Force ?

Time MassSpeed

When an object crushes on a hard surface will cause a large impulsive force？

Sponge

Egg Egg

Why the athletic needed to bend their leg while making a long jump or a high jump?

What will happen if without applying the knowledge of

Impulsive Force?

Arghh!!

Objective

To help people realize the importance of Impulsive Force in daily life

General Objective:- To determine whether the different surfacewill affect the impulsive force

- The effect of increasing or decreasing of time of impact on impulsive force

- To determine whether the velocity will affect the impulsive force

- To determine whether the different mass of object will affect the impulsive force

Do you think that impulsive force important in saving life?

Conclusion of the Result of Questionnaire

Do anyone know what is impulsive force?

About 60% of teachers don’t know

About 70% of students don’t know

So, overall 65% don’t know it actually.

BibliographyBook Reference:

• Physics Reference Book (Ace Ahead) Volume 1 written by Poh Liong Yong, Jonathan Wong, Lee BengHin 2008• Physics Reference Book (Pearson Longman) Volume 1 written by Cheong Foon Choong• Physics Reference Book (Pelangi) Volume 1 written by Poh Liong Yong• “A college text-book of physics” written by Arthur Lalanne Kimball and Peter Irving Wold• “Mechanics for Engineering” written by H. Fawkes • “Advanced Physics for you” written by Keith Johnson, Simmons Hewett, Sue Holt, John Miller

http://hyperphysics.phy-astr.gsu.edu/hbase/impulsive force.html

http://en.wikipedia.org/wiki/Impulsive_forcehttp://www.physicsclassroom.com/mmedia/impulsive forcehttp://library.thinkquest.org/2745/data/impulsive force.htmhttp://www.ehoInternet Reference:w.com/list_6601914_science-projects-impulsive-force.htmlhttp://academic.greensboroday.org/~regesterj/potl/Mechani

cs/ImpulsivelForce.htmhttp://web.presby.edu/physics/phys121-

lab/ImpulsiveForce.pdf

Apparatus & Materials are prepared for conducting experiment.

Members are setting up the sponge for preparation of experiment.

Members are preparing the scale diagram for calculating the displacement of the sponge after collide by egg

The scale diagram & sponge are done prepared.

Members are measuring the distance 2 meters for carrying experiment.

The distance 2 meters is done measured

Members are discussing how to conduct the experiment.

The reading of displacement of the sponge is taken & recorded.

Acknowledgement

School principal, Pn. Balkhis Binti Abdul Rahim Teacher in charge of RC project En. SritharanRC Physics tutor Pn. Nahariah YahayaPhysics lab assistant Pn. Sharifahform 4 physics teacher, Pn. FathiyahGroup members