3.1 Motion Flashcards
1
Q
Speed
A
distance per unit time
V = S/T
2
Q
Velocity
A
Displacement per unit time
3
Q
Displacement
A
Distance moved in a particular direction from a reference point
4
Q
Average speed
A
The total distance over the total time
5
Q
Instantaneous speed
A
Speed of an object at any given point in time
6
Q
Scalar
A
Rate of change of distance is the speed
7
Q
Vector
A
Rate of change of displacement is the velocity
8
Q
Acceleration
A
The rate of change of velocity
a = v-u / t
9
Q
Distance-Time graphs
(+)
A
Speed = Change in Distance
Change in time
- Gradient = speed
10
Q
Speed-Time graphs
(+)
A
- Area = Distance travelled
11
Q
Displacement-Time graphs
(+ and -)
A
- Total distance travelled is 0 metres
12
Q
Velocity-Time graphs
(+ and -)
A
- Acceleration = Change in velocity
Time taken - area is displacement
-acceleration is gradient
13
Q
Object Thrown in air and lands back down
A
Displacement-Time graph
- Curve ⁀
Velocity-Time graph
- Straight diagonal line going top left to bottom right 0 at Centre
14
Q
SUVAT
A
s = displacement (m) u = initial velocity (ms-1) v = velocity (ms-1) a = acceleration - constant (ms-2) t = time taken (s)
15
Q
SUVAT equations
A
v = u +at s = 1/2 (u+v)t s = ut + 1/2 at² v² = u² +2as
