Question

Express each of the following speeds in km/h. (a)60 m per minute
(b)15 m per second (c)90 m per minute
Answer me in full method
Ans-a. 3.6 km/hr
Ans-b. 54 km/hr
Ans-c. 5.4 km/hr​

Answer 1

Answer:

c number is the answer of this question

Answer 2

Answer:

Step-by-step explanation:

(a)60 m per minute = 60 m /minute = 60 m in 1 min

1 km = 1000 m

60 m = 60/1000 km = 0.06 km

1 hour  = 60 mins

1 min = 1/60 hr

60 m /minute = 0.06 km/1/60 hr =0.06 *60 km/hr = 3.6 km/hr

(b)15 m per second  = 15 m/second = 15 m in 1 second

1 km = 1000 m

15 m = 15/1000 km = 0.015 km

1 hour  = 3600 second

1 second = 1/3600 hr

50 m/second = 0.015 km/1/3600hr = 0.015 km*3600/hr = 54 km/hr

(c)90 m per minute =90 m /minute = 90 m in 1 min

1 km = 1000 m

90 m = 90/1000 km = 0.09 km

1 hour  = 60 mins

1 min = 1/60 hr

90 m /minute = 0.09 km/1/60 hr =0.09 *60 km/hr = 5.4 km/hr