1. Motion Flashcards
(19 cards)
Vectors
Magnitude and direction quantities
Scalars
Quantities without a direction
Displacement
The distance covered in a straight line
Vector quantities
Acceleration, magnitude, weight
Scalar quantities
Distance, speed, mass, energy & time
Velocity
Speed in a particular direction, e.g. 20 m/s northwards
(m) = (m/s) x (s)
Distance = Speed x Time
In a d/t graph a Horizontal line means…
Object is stationary (Distance from start point is not changing)
In a d/t graph, Straight, sloping lines means…
object is travelling at a constant speed
In a d/t graph, the steeper the line means…
the faster the object is travelling
In a d/t graph, speed is calculated from…
the gradient of a line
Acceleration (m/s2) = Change in velocity (m2)/time (s)
a = v - u/t
Final velocity2 - initial velocity2 = 2 x acceleration x distance
v2 - u2 = 2ax
U
Starting velocity
V
Final velocity
t
time
a
acceleration
x
distance
In a v/t graph, a horizontal line means…
object is travelling at a constant velocity
