The velocity-time graph of a body is as shown. What type of motion does the body possess?

List two differences in tabular form between speed and velocity. When is a body said to have: $(a)$ uniform velocity and $(b)$ variable velocity? How is the average velocity of a body calculated when its velocity changes at a non-uniform rate?

Name the physical quantity which corresponds to the rate of change of momentum.

State whether the following statement is true or false:
$A$ quantity which can be represented completely by magnitude alone is called a vector quantity.

What type of motion is represented by the following graphs?

$A$ motor bike running at $5\, m s^{-1}$,picks up a velocity of $30\, m s^{-1}$ in $5\, s$. Calculate $(i)$ acceleration $(ii)$ distance covered during acceleration.