Question

An aeroplane flies towards south and covers 324 km in 20 minutes. Calculate (i) Displacement of aeroplane (ii) Its velocity in km h$^{–1}$ and ms$^{–1}$ .​

Answer 1

Answer:

108 km/hr

30 m/s

Explanation:

see the pic you will understand easily

Answer 2

Answer:

Given information:-

An aeroplane flies towards south and covers 324 km in 20 minutes.

To find:-

Displacement of aeroplane and its velocity in km h$^{–1}$ and ms$^{–1}$ .

Solution:-

Displacement = 324 km - south. (shortest path covered from the intial point to the final point)

Now, velocity in km h$^{–1}$

We know that,

Velocity = Displacement/Time

Therefore, velocity

$= \frac{324 \: km}{ \frac{1}{3} h} \\ \\ = 972 \: km \: h {}^{ - 1} \: - \: south$

Velocity in km h$^{–1}$ = 972 km h$^{–1}$ – south

Now velocity in ms$^{–1}$

$= 972 \times \frac{5}{18} \: ms {}^{ - 1} \\ \\ = 270 \: ms {}^{ - 1} \: - \: south$