Question
What is drag? Give two examples of a drag force.
✓
Answer
The drag is the other name for fluid friction. It resists the motion of any object that travels in fluid. 
Examples:
$i.$ A boat travelling in water.
$ii.$ An aeroplane moving in the sky.
Examples:$i.$ A boat travelling in water.
$ii.$ An aeroplane moving in the sky.
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