Question

An object of mass m is dropped on sand from height and it penetrates some distance into the sand before coming to rest. Average resistance exerted on the object by sand, is
(a) equal to mg
(b) more than mg
(c) less than mg
(d) data insufficient ​

Answer 1

Answer:

the answer of your question is

c less than mg

Answer 2

(c) less than mg

Explanation:

If the resistance was more than mg, then the object would have never penetrated into the sand