Analysing impulse and impulsive force
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Malaysia SPM Form 4, Chapter 2: Force and Motion
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[edit] Impulse
Impulse is defined as the product of the force (F) acting on an object and the time of action (t).
Impulse exerted on an object is equal to the momentum change of the object.
Impulse is a vector quantity.
[edit] Equation of Impulse
Impulse is the product of force and time.
Impulse = F × t
Impulse = momentum change
Impulse = mv - mu
[edit] Effects of Impulse vs Force
A force determines the acceleration (rate of velocity change) of an object. A greater force produces a higher acceleration.
An impulse determines the velocity change of an object. A greater impulse yield a higher velocity change.
[edit] Impulsive Force
- Impulsive force is defined as the rate of change of momentum in a reaction.
- It is a force which acts on an object for a very short interval during a collision or explosion.
[edit] Examples Involving Impulsive Force
- Playing football
- Playing badminton
- Playing tennis
- Playing golf
- Playing baseball
[edit] Long jump
- The long jump pit is filled with sand to increase the reaction time when atlete land on it.
- This is to reduce the impulsive force acts on the leg of the atlete because impulsive force is inversely proportional to the reaction time.
[edit] High Jump
- During a high jump, a high jumper will land on a thick, soft mattress after the jump.
- This is to increase the reaction time and hence reduces the impulsive force acting on the high jumper.
[edit] Jumping
A jumper bends his/her leg during landing. This is to increase the reaction time and hence reduce the impact of impulsive force acting on the leg of the jumper.
[edit] Frequenly Asked Question
[edit] Additional notes
[Additional notes content information relates to this topic but may not be in the SPM syllabus]
[edit] External Links
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