Topic 3: Motion Flashcards
(17 cards)
What is a scalar quantity
Has magnitude only (size)
What is a vector quantity
Has magnitude and direction
Examples of vector and scalar
Vector
- Displacement Force Velocity acceleration
Scalar
- Area, Mass, Distance, Speed
Speed equation
Distance / Time
Velocity Equation
Displacement / Time
Average speed
Total distance / total time
Average velocity
Total Displacement / total time
Gradient in a distance time graph =
distance / time
gradient in a displacement time graph
displacement / time
Rate of change of speed =
time
Acceleration =
time
displacement on a velocity time graph
Area under graph
Two main forces affect an object as it falls
Weight
Air resistance
What is Newtons Second law of motion
The acceleration is directly proportional to the resultant force
The acceleration is inversely proportional to the mass
Resultant force equation
RF = ma (mass x acceleration)
1 Newton is defined as
The resultant force required to give a mass of 1kg and acceleration of 1/m/s²
