Question

To cover a distance of 225 km in 2.5 hours what should be the average speed of the car in meters/second?

A) 90 m/s B) 45 m/s C) 50 m/s D) 25 m/s

Answer 1

Answer:

D) 25 m/s

Step-by-step explanation:

Given:

Distance to be covered = 225 km

In 2.5 hours

Find :

Average speed of the car (meters/second)

Solution :

Convert into meters (distance) = 225000

Convert into seconds (time) = 9000

Formula of average speed = distance/time

Hence,

average speed = 225000 / 9000

⇒ 225000 / 9000

⇒ 25

Therefore,

D) 25 m/s

The average speed of the car 25 m/s

Answer 2

To find :-

average speed of the car in meters/second

Given :-

Distance is 225 km

Time is 2.5 hours = 2 hours and 30 Min = 2 and 1/2 hours

So, Speed = Distance / Time

» 225 / 5/2

» 225 × 2 / 5

» 45 × 2

» 90 km/h

Therefore, We will convert the speed into m/s

90 × 5/18

» 25 m/s