Question

(iii) 144 km/hr conert into m/sec​

Answer 1

Answer:

144000/60x60

40 m/s is the correct answer

Answer 2

Answer:

40 m/sec

Step-by-step explanation:

We know that 1 km = 1000 m and 1 hr = 60 min, 1 min = 60 sec.

So 1 hr = 60 × 60 sec

144 km/hr

= 144 × 1000 m/hr

= (144 × 1000) ÷ (60 × 60) m/sec

= (144 × 1000) ÷ (36 × 100) m/sec

= (144 ÷ 36) × (1000 ÷ 100) m/sec

= 4 × 10 m/sec

= 40 m/sec