Question

A man walks on a straight road from his home to a market 3 kilometre away with the speed of 6 kilometre per hour the time taken by the man to go from his home to market equal-

Answer 1

Given :

▪ Distance travelled = 3km

▪ Speed = 6km/h

To Find :

▪ Time of journey.

SoluTion :

▪ Speed is defined as the ratio of distance travelled to the time taken.

▪ It has only magnitude because it is a scalar quantity.

▪ It can't be negative or zero because term distance can't be zero.

▪ SI unit : m/s

→ Speed = Distance/Time

→ 6 = 3/Time

→ Time = 3/6 = 1/2

→ Time = 0.5hr

❇ Time taken by man to go from his home to market = 0.5hr

Answer 2

Given that, a man walks on a straight road from his home to a market 3 km away with the speed of 6 km/hr.

We have to find the time taken by the man to go from his home to market.

• Time is what a clock reads. It's S.I. unit is second (s).
• Distance is defined as the total path covered by the body. It's S.I. unit is metre (m).
• Speed is defined as the distance covered by body per unit time. It's S.I. unit is metre per second (m/s).

We know that,

Time = Distance/Speed

From above data we have distance is 3 km and speed is 6 km/hr.

Substitute the known values in the above formula,

Time = 3/6 = 0.5 hr

Therefore, the time taken by the man is 0.5 hr.

$\rule{200}2$

Another similar question

A boy start moving from his home to market with a speed of 5 km/hr and the distance covered by the boy is 15 km. Find the time taken by the boy.

Solution.

Given: distance is 15 km and speed is 5 km/hr.

We have to find the time taken by the boy.

Now,

Time = Distance/Speed = 15/5 = 3 hr

Therefore, the time taken by the boy is 3 hrs.