Motion Flashcards
Give some examples of vector quantities
Force, displacement, acceleration, velocity
Give some examples of scalar quantities
mass, temperature, time, distance, speed
What is a scalar quantity?
Quantities that have magnitude but no sense of direction.
What is a vector quantity?
Quantities that have magnitude and a sense of direction.
Is distance a vector or scalar quantity?
scalar
Is speed a vector or scalar quantity?
scalar
Is displacement a vector or scalar quantity?
vector
Is velocity a vector or scalar quantity?
vector
Is acceleration a vector or scalar quantity?
vector
How do you calculate distance on a velocity-time graph?
The area
What is the gradient on a distance-time graph?
Velocity
What is the gradient on a velocity-time graph?
Acceleration
How do you calculate acceleration?
Change in velocity
_______________
Time
How do you calculate velocity?
Distance
_______
Time
The size of a braking force affects the braking distance. What other factors affect the breaking distance?
Speed/velocity
Condition of brakes / road surface / tyres
Weather
How do you calculate work done?
Force X distance
What does a distance time graph with a horizontal line mean?
Stationary
What does a distance time graph with a diagonal line mean?
Travelling at a constant speed
What does a distance time graph with a curved line mean?
Accelerating/decelerating
What does a velocity time graph with a horizontal line mean?
Travelling at a constant speed
What does a velocity time graph with no line mean?
Stationary
What does a velocity time graph with a diagonal line mean?
Accelerating
How do you find a gradient of a curve?
Use a tangent
What is the typical speed of a person walking?
1.5m/s
What is the typical speed of a person running?
3m/s
What is the typical speed of a person cycling?
6m/s
What is the typical speed of a car?
13-30m/s
What is the speed of sound?
330-340 m/s
A horizontal line on a distance-time graph tells you what about the motion of an object?
stationary
What are the units of acceleration?
m/s^2
If an object has negative acceleration what does this mean?
decelerating
How long would it take me to travel 200m if my speed is 2m/s?
100s
If an object has negative velocity what does this mean?
travelling in the other direction
In physics, what does the symbol “u” represent?
initial velocity
In physics, what does the symbol “v” represent?
final velocity
