Question

the velocity of a car is 18 ms-1 . Express this velocity in km h-1.​

Answer 1

Answer:

18*18/5 = 64.8 km/hr.

Explanation:

Given,

Velocity of car =18ms

−1

To express this velocity in km h

−1

we need the conversion factor which is calculated as under:

1km=1000m

so, 1m=

1000

1

km

Now, 1hr=60minutes=60×60s=3600s

So, 1s=

3600

1

hr

Now, velocity of car =18

s

m

18

1000

km

×

hr

3600

=64.8km h

−1

HOPE MY ANSWER WILL

HELP YOU.....

Answer 2

Explanation:

we can change m/s into km/h by multiplying with 18÷5

18×18÷5

=64.8