B. False
because kilogram is the unit of mass.
<span>The value of the constant needed to complete in joules to three significant figures is 2.18 x 10^-18 J.</span>
Answer:
Explanation:
Represent the car's position as a function
"head start"
"cathching up means" that 
An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are conserved quantities in elastic collisions. ... They collide, bouncing off each other with no loss in speed.
