Motion Flashcards
What is distance?
How far an object moves
What is speed?
Rate of change of distance
What is the typical speed of walking?
1.5 m/s
What’s the typical speed of running?
3 m/s
What’s the typical speed of cycling?
6 m/s
What’s the typical speed of a car?
13-30 m/s
What’s the typical speed of a train?
50 m/s
What’s the typical speed of an aeroplane?
250 m/s
Give the equation for speed
Distance travelled / time taken
What is speed (v) measured in?
M/s
What does a ruler measure? (For speed)
Distance
What does a stopwatch measure?
Time
What do light gates measure?
Size and time
What is acceleration?
The rate of change of velocity
Give the equation for acceleration
Change in velocity / time taken
V-U / t
What is acceleration (a) measured in?
M/s ^2
What is the typical acceleration of running?
2 m/s
Give the typical acceleration of a family car
1-7 m/s
Give the typical acceleration of a motorbike
1-10 m/s
What is the typical acceleration of a rollercoaster?
30-60 m/s
Give the typical acceleration of a formula one car
49 m/s
Go over velocity graphs
Give the equation for final velocity
(Final velocity)^2 -(initial velocity)^2 = 2 X acceleration X distance
V^2-U^2 = 2as
When will an object accelerate?
If a resultant force acts on it
What’s a centripetal force?
A force needed for circular motion- acts towards the centre of a circle
