Topic 9 (mechanics) Flashcards
1
Q
average velocity
A
resultant displacement divided by total time
2
Q
average speed
A
total distance divided by total time
3
Q
gradient of displacement time graph
A
velocity
4
Q
Velocity time graphs
A
Velocity = y-axis Time = x-axis
Initial velocity = u
Final velocity = v
5
Q
Gradient of velocity time graph
A
Acceleration
Rate of change of velocity
6
Q
Area beneath velocity time graph
A
Displacement
7
Q
kinematics
A
study of motion
8
Q
suvat
A
displacement initial velocity final velocity acceleration time
9
Q
final velocity formulae x2
A
v = u +at
v(squared) = u(squared) + 2as
10
Q
distance formulae x3
A
s = 1/2 (u+v)t
s=ut + 1/2 at(squared)
s=vt -1/2 at (tsqaured)
11
Q
Gravity
A
force of gravity = objects accelerate towards earth
ignore air resistance = gravity constant (doesnt depend on mass of object)
on earth = 9.8m/s squared
