Assertion : A person receive more injury when he falls from a height on a concrete pavement than when he falls from the same hight on a bed of sand
Reason : The force exerted on the person by the concrete pavement is more than that exerted by the bed of sand .

Options

A. If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion
B. If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion
C. If Assertion is ture but the Reason is false
D. If both, Assertion and Reason are false

Answer

a

Explanation

Change its momentum is given by `dp =F dt` In case of concrete pavement man is brought to rest almost immediately and as such `deltt` is small therefore `F` is large So person receives more injury on concrete pavement .