Why does an object in motion stay in motion unless acted on by an unbalanced force?
A) because forces are what stop and start motion
B) because balanced forces cannot exist in nature
C) because motion is the inherent state of all matter
D) because motion, once begun, continues to accelerate

because forces are what starts and stops motion.. (a)

Explanation:

as stated in Newton's first law of motion which states that all objects in the world will continue to be in motion or in equilibrium unless acted upon by an external force

b. latent learning (the word "latent" itself means something that exists but isn't obvious, only under certain conditions! )

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.