40 km/h to in/s
60*60=3600 seconds in an hour
one km is about 0.621 miles
40 km is about 0.621*40=24.84 miles
5280 feet in a mile
12 inches on each foot
5280*12=63360 inches in a mile
63360*24.84=1573862.4 inches in 40km
40 km/h = 40*1573862.4/3600=17487.36 in/s
the moon rock since its gravity is 10x lighter than earths
If we started mining asteroids, we wouldn't have to carry so much fuel around. We'd be able to go further than we've ever imagined. We'd mine asteroids for water ice to get water – an essential element for sustaining human life anywhere in space.
I believe the answer would be A.
If you look up what it looks like, I am sure you will find a photo that explains the line up. (:
Hope this helps!
