Check Point 1

State whether displacement is a scalar or vector quantity. (write 'scalar or vector' only).

What is the displacement of a satellite when it makes a complete round along its circular path?

In which of the following cases will the distance covered and the magnitude of the displacement are not the same? Justify.

(i) A passenger in a train travels from Delhi to Kolkata

(ii) A raindrop falling in still air.

(iii) An athlete complete one lap in race.

After studying the motion of a ball rolling on a straight line as shown in figure

Find the distance and displacement covered when it rolls from P to Q and then to R (i.e., P to Q to R).

After studying the motion of a ball rolling on a straight line as shown in figure

Find the distance and displacement covered when it rolls from P to Q and then to R and finally come back to P (i.e., P to P) (Take, P as reference point)

Which of the two can be zero under certain conditions: average speed of a moving body or average velocity of a moving body?

_____ is the term used for negative acceleration. 

A bus starting from rest attains a velocity of $54 \mathrm{km}/\mathrm{h}$ in $60 \mathrm{s}$, its acceleration is _____.