Mechanics - Speed,velocity and acceleration Flashcards
1
Q
What does rectilinear motion mean?
A
Motion along a straight line
2
Q
Equation for distance and displacement?
A
d = st s = vt
3
Q
What is instantenous velocity or speed?
A
velocity or speed coefficient at that point (at that instant)
4
Q
What is speed?
A
how fast something is travelling
5
Q
What is velocity?
A
the rate of change of objects displacement (speed in a given direction)
6
Q
What is acceleration?
A
acceleration is rate of change of velocity (how fast speed is changing)
7
Q
What ‘type’ of velocity is final and initial?
A
instantaneous
8
Q
How do we work out average velocity?
A
v+u divided by 2
9
Q
are velocity and acceleration vectors?
A
yes
10
Q
is speed a vector?
A
no
