Forces & their Interactions (AQA GCSE Physics Combined Science): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
Definition of resultant force
Definition of resultant force
Combined effect of all forces acting on an object
Two features of forces as vectors
Two features of forces as vectors
Size (in Newtons) and direction
Unit for measuring force
Unit for measuring force
Newtons (N)
Resultant force when forces in same direction
Resultant force when forces in same direction
Add them together
Resultant force when forces in opposite directions
Resultant force when forces in opposite directions
Subtract smaller from larger
Meaning of zero resultant force
Meaning of zero resultant force
All forces are balanced
Effect of zero resultant force
Effect of zero resultant force
No acceleration; stationary or constant speed
Meaning of non-zero resultant force
Meaning of non-zero resultant force
Forces are unbalanced
Effect of non-zero resultant force
Effect of non-zero resultant force
Object will accelerate
Car at steady speed: resultant force
Car at steady speed: resultant force
Zero (engine force = air resistance)
Accelerating car: resultant force
Accelerating car: resultant force
Non-zero (engine force > drag)
Falling ball: forces acting
Falling ball: forces acting
Gravity down, air resistance up