Abody of mass 2kg fall from rest having penetrate a distance of 0.5 metres into a sandy ground. calculate the average force exacted by the sand in bringing the body to rest(g=10ms²)

A. to determine if humans can explore mars safely

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So since the snail is moving at 3.6  miles per hour you multiply by 5280 to change it into feet per hour. so you get 36*528 ft per hour. since there are 3600 seconds in an hour, you divide 36*528 by 3600. so simplifying we get 528/100 which is 5.28 ft per second