Question

a car takes 20 mins to cover a distance of 15 km. calculate it's speed in m/s​

Answer 1

refer to image

Explanation:

speed=distance/time

Answer 2

Given

• Distance covered by the car = 15 km
• Time taken by the car to cover the distance = 20 min

To find

• The speed of the car in m/s.

Solution

Firstly, we will convert the distance covered by the car from km to m.

As we know,

1 km = 1000 metres

To convert the distance from km to m, multiply the value by 1000 metres.

⟶ 15 × 1000

⟶ 15000 m

Distance covered by the car in m = 15000 m

Now, we will convert the time from minutes to seconds.

As we know,

1 min = 1/60 hr

To convert the time from min to sec, multiply the value by 60.

⟶ 20 × 60

⟶ 1200 s

Time taken by the car to cover the distance in seconds = 1200 s

Using formula,

Speed = Distance/Time

Substituting the given values,

⟶ 15000/1200

⟶ 150/12

⟶ 12.5 m/s

Therefore, speed of the car in m/s = 12

5 m/s.