Question

Select the incorrect statement.
A boat running in water will _______.

• A. produce heat
• B. face sliding friction
• C. face air drag
• D. face water drag

Answer 1

The correct option is B face sliding friction

Drag is also a type of friction, so this drag will produce heat.
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A boat running in water will face both air and water drag, as it is partially in air and partially in the water.

Sliding friction occurs only between solid surfaces.

Hence, a boat running in water will not face sliding friction.