What type of motion, uniform or non-uniform, is exhibited by a freely falling body? Give reason for your

What is the SI unit of retardation?

Fill in the following blanks with suitable words:

(a) _______ is a vector quantity whereas ________is a scalar quantity.

(b) The physical quantity which gives both, the ___ and _____ of motion of a body is called its velocity.

(c) A motorcycle has a steady acceleration Of 3 m/s². This means that every second its ………increases by ………… .

(d) ___________ is the rate of change of displacement. It is measured in m/s.

(e) ____________ is the rate of change of velocity . It is measured in ………………… .

State whether speed is a scalar or a vector quantity. Give reason for your choice.

Bus X travels a distance of 360 km is 6 hours. Whereas bus Y travels a distance of 427 km in 7 hours. Which bus travels faster?