Motion Unit 1.2 Flashcards
what is motion?
The change in position of an object over time
What is speed?
Distance travelled over time
what is Velocity?
Speed in a given direction
Distance-time Graphs: Horizontal line
At rest (stationary)
Distance-time Graphs: straight line with positive gradient
At constant speed
Distance-time Graphs: Curve with increasing gradient
Accelerating (Speeding up)
Distance-time Graphs: curve with decreasing gradient
Decelerating (slowing down)
Average speed
Total distance / Total time
Acceleration
change of speed over time
formula for acceleration
final speed - initial speed / time
Speed-time Graphs: Horizontal line
Moving at constant speed (not at rest)
Speed-time Graphs: Straing line positive gradient
constant acceleration
Speed-time Graphs: curve line increasing gradient
changing acceleration
Speed-time Graphs: straight line negative gradient
constant deceleration
Speed-time Graphs: curve line decreasing gradient
changing deceleration
how do you find the distance travelled
Area under the graph
area of a rectangle
width * height
area of a triangle
Base * height / 2
area of a circle
pie * r squared
formula for average speed
distance moved / time taken
formula for acceleration
change in velocity (speed) / time taken
formula for final speed (squared)
initial speed (squared) + 2 * acceleration * distance moved
formula for velocity
distance travelled (displacement) / time taken
examples of forces
Air resistance,pull,drag, weight, friction
final speed formula
u + a * t ( initial speed + acceleration * time
momentum formula
mass * velocity (speed)
force formula
change in momentum / time taken
