Assertion (A): A parachute enables a person to descend safely from a height in case of an accident.
Reason(R): A parachute is made of a fabric with a limited air permeabiltyand has very large frontal area .When it falls through air,it experiences heavy air resistance.The forces oflift and drag due to air flow balance the weightof the parachutist so that one descends at a constantly slow speed.

Solution

A talks about parachutes enabling a person to descend from height at a slower and safer speed. Its explanation is correctly given by R, which talks about the material of a parachute and how the mechanism helps in descending at a slower speed. Hence, both statements are true and R is the correct explanation of A.

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