Answer:
A, E
Explanation:
To convert meters per minute to kilometers per hour, the necessary conversion factors are:
A. 1km/1000m - To convert meters to kilometers
E. 60min/1hr - To convert hours to minutes
So the correct options are A and D.
Why don't we need the conversion factor D (60sec/1min)?
We are given meters per minute (m/min) and want to convert to kilometers per hour (km/hr).
The steps are:
- Meters to kilometers:
- m/min * 1km/1000m
- This cancels out the meters
- Minutes to hours:
- (m/min * 1km/1000m) * 60min/1hr
- The minutes cancel out directly here without needing to convert to seconds
--> Meters cancel out directly with the m to km conversion
Minutes then cancel out directly when converting to hours, without an intermediate step of converting minutes to seconds
Sorry for the mishap!