Physics Flashcards
Write the five kinematic formula:
v = u + at v^2 =u^2 +2as Vav = s/t s = ut + 1/2at^2 Vas = v+u / 2
formula for average velocity:
Vav = s/t
The two formula’s for acceleration
a = (change in)v / (change in)t a = v-u / t
changing from k/m to m/s and vice versa:
km/h divided by 3.6 = m/s
m/s x 3.6 = km/h
definition of acceleration:
Acceleration is the rate of change in velocity
Formula of displacement:
d = s / t
What is important to remember when dividing by time?
Remember to divide by the time interval not the total time
Formula of gradient and average velocity:
rise / run
Three facts about a speed-time graph:
- Area under graph = distance travelled.
i. e. b x h / 2 - straight horizontal line = constant speed
- straight diagonal line = constant acceleration
Two facts about a distance-time graph:
- straight diagonal line = constant speed
- curved line = constant acceleration
Important to remember when finding the distance travelled on a speed time graph:
You may have to split the area under the graph.
Newton’s second law:
F = ma
Definition of momentum:
A way of measuring how much “movement” is taking place.
Formula for momentum:
p = mv
About momentum
Momentum before = momentum after
