Answer:
everyone except his smaller siblings will be older than him
Step-by-step explanation:
if you need the correct answer say the full question you
dumb
You can use a calculator online.
Here's the link but I already did it for you
https://www.metric-conversions.org/speed/miles-per-hour-to-feet-per-second.htm?val=45
It's 66 ft per second.
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