Assertion: The driver in a vechile moving with a constant speed on a straight road is in a non-inertial frame of reference.
Reason: A reference frame in which Newton's law of motion are applicable is non-inertial.

Answer

C

Explanation

Ball bearings, also known as anti-friction bearings, are small metallic or ceramic sphere used to reduce friction between shafts and axles in a number of application. Ball bearings are often used in a series to absorb the weight place on a moving part, or in individual cases to reduce friction in axle assemblies. Hence, option `(c)` is true.