Newton’s first law (AQA GCSE Physics Combined Science): Flashcards
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12 cards from this deck
Newton's first law
Newton's first law
Objects stay at rest or constant speed when forces balanced
Definition of equilibrium
Definition of equilibrium
When forces on an object are balanced
Forces on a stationary object
Forces on a stationary object
Must be balanced (resultant force )
Forces on object at constant speed
Forces on object at constant speed
Can be balanced (resultant force )
Zero resultant force: common mistake
Zero resultant force: common mistake
Not just stationary - also constant speed possible
Two states with zero resultant force
Two states with zero resultant force
Stationary OR moving at constant speed
Unbalanced forces cause
Unbalanced forces cause
Acceleration
Acceleration direction vs resultant force
Acceleration direction vs resultant force
Same direction as the resultant force
Calculating resultant force (opposite forces)
Calculating resultant force (opposite forces)
Subtract smaller force from larger force
Forward resultant force effect on car
Forward resultant force effect on car
Car accelerates forward (speeds up)
Backward resultant force effect on car
Backward resultant force effect on car
Car decelerates (slows down)
Zero resultant force on moving car
Zero resultant force on moving car
Car continues at same speed