Motion Flashcards
(17 cards)
Vector quantities
Quantities that have both size and direction
Scalar quantities
Quantities that do not have a direction
What does mass measure
The amount of matter in something and does not have a direction
Displacement
The distance covered in a straight line, and has a direction
What are forces measured in
Newtons
Velocity
Speed in a particular direction
Acceleration
A measure of how fast velocity is changing
Momentum
A combination of mass and velocity
Instantaneous speed
Speed at a particular point in a journey
Formula for speed
Distance(m)
Speed(m/s)= —————
Time taken(s)
Distance travelled formula
average speed x time
(m/s) (s)
Change in velocity
Acceleration
What does acceleration tell you
The change in velocity each second
What quantity is velocity
Vector
Acceleration units
m/s2
Acceleration formula
change in velocity(m/s)
————————————
time taken(s)Deceleration
Acceleration causing an object to get slower
