chap 2: kinematics 🚦 Flashcards
1
Q
definition of distance
A
total length of actual path travelled by a body when it changes its position
2
Q
definition of displacement
A
distance from a fixed point in a specific direction
3
Q
definition of speed
A
rate of change of distance travelled
4
Q
definition of velocity
A
rate of change of displacement
5
Q
definition of acceleration
A
rate of change of velocity
6
Q
what does the area under acceleration-time graph represent?
A
change in velocity
7
Q
what are the two conditions for the use of kinematics equations?
A
- motion of body is linear
- acceleration of a body is constant
8
Q
what happens when there is air resistance?
A
- horizontal velocity is reduced
- range is smaller
