Motion (Topic 1) Flashcards
How to calculate speed
Distance divided by time
How to calculate distance
Speed X time
How to calculate Time
Distance divided by speed
How many metres in a kilometre
How many seconds in a minute
1000M
60 sec
What are the units of speed
m/s
What are the different types of motions graphs
No movement- stationary
Constant movement- steady spread
Acceleration
How to find the load?
3 X effort
What two things can a gear system change?
Speed and direction
What type of gears meet at an angle?
Bevel
What type of gear uses a screw?
Warm
How to find average speed or velocity
Initial speed (u) + final speed (v)
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2
What does the gradient of a distance - time graph give you?
The speed
How to find the rate change of speed (acceleration or deceleration) in a speed - time graph?
U - V divided by time or the gradient of the graph (if there is one)
How to find the distance from a speed - time graph?
Area under the graph
What is a scalar? (Physical measurement)
These have only size and magnitude e.g. distance, speed, energy, time
What is a vector? (Physical measurement)
These have both magnitude and direction e.g. force, moment, velocity, displacement
Displacement definition
It is the distance moved from a fixed point in a particular direction
Velocity definition and how to work it out?
It is the rate of change of displacement with time.
Velocity = displacement divided by time
What does the gradient of a displacement - time graph give you?
The velocity
What does the gradient of a velocity - time graph give you?
The acceleration
How to get the displacement of a velocity - time graph?
Area under the graph
