Question

Express 72 km per hour in metres per minute​

Answer 1

Answer:

Please correct that

It will be Meters per second

There are two ways to solve

In first way

We need to take m/s as 5/18

$= 72 \times \frac{5}{18} \\ \\ = { \cancel{72}} \: \: ^{4} \times \frac{5}{ { \cancel{18}} } \\ \\ = 5 \times 4 = 20$

=20m/s

In second method,

We need to convert them to metre and second and simplify.

As we know that 1km=1000m

So 72km=72×1000=72000m

1 hour=3600 seconds.

so

$\frac{72000}{3600} \\ \\ = \frac{ { \cancel{720}} \: \: ^{20} \cancel{00}}{ \cancel{36} \cancel{00}} \\ \\ = 20$

=20m/s

Hope it helps you from my side

Answer 2

speed = 72km/hr

Speed = 1200 metres / minute