Question

question 10 of 25
if you do not have oil in your cars engine, the parts that rub together in the
engine get very hot. what does the oil do?
a. it decreases the force of friction.
b. it increases the force of friction.
c. it decreases the force of gravity.
d. it increases the force of gravity.

Explanation:

Oil acts as a lubricant in an engine. Lubricants reduce the force of friction between moving parts. The force of gravity is related to mass and the gravitational constant and is not affected by the presence or absence of oil. Since the question is about the effect of oil on engine parts that rub together (which relates to friction), we can analyze each option. Option A says it decreases the force of friction which is correct as oil lubricates. Option B is wrong as oil doesn't increase friction. Options C and D are wrong because oil has no impact on the force of gravity.

Answer:

A. It decreases the force of friction.