Question

5. A car is moving with a speed of 25 m/s and and a bus is moving with a speed of 90 km/h. Both the vehicles are moving with the same speed. Why?​

Answer 1

Answer:

Speed of car = 25m/s

Explanation:

Then speed of car per minute = 25 × 60 = 1500m per minute

Speed of car per hour = 1500 m = 1.5 km

1.5×60 = 90kmph

Hence, the car and the bus move at same speed. It's just that the value given for speed in the question is different.

Answer 2

Given,

Speed of the car=25m/s

Speed of the bus=90km/h

To Find,

Why they are in same speed.

Solution,

Here the speed of the car is in the form of m/s which is 25m/s.

But speed of the bus is given in the form of km/h and both have in their different units.

So to calculate if they are in same speed so we have to make both in same unit.

So we will make the speed of the bus into m/s.

And we know 1km/h=(1000/3600)m/s

                                  =5/18 m/s

So 90 km/h will be= 90×5/18

                               =25m/s

So now they are in the same unit and they have same value of speed.

Hence, they are moving with the same speed.