Question

The speed of 90 km/h is equal to: *

1 point​

Answer 1

Answer:

25meter/ second

.,.............................

Answer 2

1 km = 1000 m

1 hour = 60 × 60 = 3600 sec

$\frac{90km}{1h} \\ \\ = \frac{90 \times 1000}{1 \times 60 min \: \times 60sec} \\ \\ \\ = \frac{900}{36} \\ \\ = 25 \frac{m}{sec}$

Always remember,

1. When we convert a Large unit to small unit we have to multiply with specified number
2. When we convert a Small unit to Large unit we have to divide with specified number
3. Example : 1 km = 1 ×1000 m

1 m = 1/ 1000 km

1 m = 1 × 100 cm

1 cm = 1/100 m