Which of the following is NOT a component of Newton’s first law of motion? a
An object at rest stays at rest.
b
An object in motion stays in motion.
c
An object in motion has a constant velocity (speed and direction) unless acted on by a balanced force
d
An object in motion has a constant velocity (speed and direction) unless acted on by an unbalanced force.

C.) is the correct option !!

An object in motion has a constant velocity (speed and direction) unless acted on by a balanced force.

because a balanced force can't cause change in it's velocity.

true                                                                                                       true true true true true true