Impulse (Grade 12 NSC Matric Physical Sciences): Flashcards
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Definition of impulse
Definition of impulse
Product of net force acting on object and time interval
Formula for impulse
Formula for impulse
Units of impulse
Units of impulse
N·s or kg·m·s
Impulse-momentum theorem
Impulse-momentum theorem
Impulse equals change in momentum:
Area under force-time curve represents
Area under force-time curve represents
The impulse delivered to the object
Impulse for constant force (rectangular profile)
Impulse for constant force (rectangular profile)
Force × time
Impulse for triangular force profile
Impulse for triangular force profile
Why car airbags increase collision time
Why car airbags increase collision time
To reduce force while maintaining same impulse/momentum change
Sign of impulse from force-time graph areas
Sign of impulse from force-time graph areas
Positive above time axis, negative below
Large force briefly vs small force longer
Large force briefly vs small force longer
Can produce same impulse and same momentum change
