CP1 Flashcards
Relation of:
-Speed
-Distance
-Time
Speed = Distance/Time
s = d/t
Speed measurement
m/s (metres per second)
Distance measurement
m (metres)
Time measurement
s (seconds)
Relation of:
- Acceleration
-Final velocity
-Initial velocity
-Time
Acceleration = final velocity - initial velocity/time
a=v-u/t
Acceleration measurement
m/s^2 (metres per second squared)
Final velocity measurement
m/s (metres per second)
Initial velocity measurement
m/s (metres per second)
Relation of:
-Weight
-Mass
-Gravitational Field Strength (GFS)
Weight = Mass x GFS
w = mg
Weight measurement
N (Newtons)
Mass measurement
kg (kilograms)
GFS measurement
N/kg (Newtons per kilogram)
What is the GFS on Earth?
10N/kg
Relation of:
-Acceleration
-Final velocity
-Initial velocity
-Distance
Final velocity squared - Initial velocity squared = 2 x acceleration x distance
v^2 - u^2 = 2ax
ONLY IN THIS EQUATION IS DISTANCE REPRESENTED BY X.
What is a scalar quantity?
A scalar quantity has a size but no direction
Give 4 examples of scalar quantities
-Speed
-Mass
-Distance
-Time
Give 4 examples of vector quantities
-Velocity
-Weight
-Displacement
-Acceleration
-Momentum
What is a vector quantity?
A vector quantity has size and direction.
(The direction can be indicated in different ways.)
What is the vector quantity of speed?
Velocity
What is the vector quantity of mass?
Weight
What is displacement?
Displacement is the distance covered in a straight line and includes a direction.
What is the vector quantity of distance?
Displacement
What is acceleration?
A measure of how fast velocity is changing.
What is momentum?
A combination of mass and velocity.
