Select the correct answer. The motion of a car on a position-time graph is represented with a horizontal line. What does this indicate about the car's motion?
А
It's not moving.
B.
It's moving at a constant speed.
с.
It's moving at a constant velocity.
D.
it’s speeding up

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.