Question

a bus covers a distance of 245 km in 5 hours.Calculate it's speed.​

Answer 1

Answer:

speed=distance/time=245/5=49 hr

Answer 2

Answer :-

• The speed of the bus is 49 km/hr.

Given :-

• Distance covered by the bus = 245 km.
• Time taken to cover that distance = 5 hours.

To find :-

• The speed of the bus.

Step-by-step explanation :-

We are given the distance covered by the bus and the time taken to cover that distance. We have to calculate it's speed.

We know that :-

${\boxed {\bf Speed = \dfrac{Distance}{Time}}}$

Substituting the values,

$\bf Speed = \dfrac{245\:km}{5\:hrs}$

$\bf Speed = \dfrac{49\:km}{1\:hr}$

So, the speed of the bus is 49 km/hr.

Verification :-

To check our answer, we just have to multiply the distance covered by the train in 1 hour by 5 and see whether we get 245 km (As it is given that the bus covers 245 km in 5 hours)

We get :-

$\bf 49\: km \times 5$

Multiplying the numbers,

⇒ 245 km.

Since the distance covered by the train in 5 hours at the speed of 49 km/hr is 245 km,

Hence verified!

Extra information :-

Since the SI unit of speed is m/s,

Therefore lets also learn how to convert km/hr to m/s.

We know that :-

${\boxed {\bf 1\: km = 1000\: m}}\\\\{\boxed {\bf 1 \:hr = 3600 \:s}}$

So, km/hr = $\bf \dfrac{1000}{3600} = \dfrac{5}{18}$

So, to convert km/hr to m/s, we have to multiply the numbers by $\bf \dfrac{5}{18}$