Linear Kinematics (Core)

Question 1

Define the term kinematics

Answer 1

Kinematics is the description of motion. (It has two strands Linear Kinematics and Angular kinematics).

Question 2

Describe the different forms of motion.

Answer 2

1. Motion can be classified as Linear motion. This can be split up into rectilinear motion and curvillinear motion.
2. Motion can be classified as angular motion (rotation).

Question 3

Define scalar.

Answer 3

(of a quantity) Having only magnitude, not direction.

Question 4

Define vector.

Answer 4

A quantity having direction as well as magnitude

Question 5

State and define the kinematic parameters (6).

Answer 5

Position- This refers to it’s location in space relative to some baseline value or axis.

Distance- The length of path which a body covers during motion. (metres)

Displacement-The length of the path from initial to final position and includes the specification of direction. (meters).

Speed- The rate of change of distance. (D/T) (m/s).

Velocity- The rate of change of displacement. How quickly an object moves from it’s initial position to it’s final position.

Acceleration- The rate of change of the velocity of an object with respect to time.

Question 6

Explain the process we endure prior to considering any parameters.

Answer 6

1. Define **position e.g. coordinate data (x,y)= the Cartesian coordinate system.
2. Then before any kinematic analysis we need to define the spatial reference system.
3. And then note that every coordinate plotted on a graph can be described by a Position vector.

Question 7

Define position vector.

Answer 7

A Position vector has components in the x and y directions.