Conversion of rates

Question 1

Which is faster?

30 km/h or 20 m/s

Answer 1

20 m/s

To know why, we must be able to convert the rate to another

Question 2

1 km = ? m

Answer 2

1 km = 1000 m

Question 3

1 hr = ? min

Answer 3

1 hr = 60 min

Question 4

1 min = ? sec

Answer 4

1 min = 60 sec

Question 5

1 hr = ? sec

Answer 5

1 hr = 60 * 60

= 3600 sec

Question 6

To convert 30 km/h to m/s

convert km to m and the hr to sec

Answer 6

30000 m/ 3600 sec = 8.33 m/s

Question 7

Convert 20m/s to km/h

convert m to km and the sec to hr

Answer 7

0.02 km/ (1/3600) hr = 3600 * 0.02 km/h

= 72 km/h

Question 8

Convert 25m/s to km/h

Answer 8

0.025 km/ (1/3600) hr = 3600 * 0.025 km/h

= 90 km/h

Question 9

To convert 54 km/h to m/s

Answer 9

54000 m/ 3600 sec = 15 m/s