Using the periodic table and your knowledge of atomic structure. would carbon-14 have more, less or the same number of neutrons as a typical carbon atom? how do you know? a) the same number of neutrons. all carbon atoms have atomic number 6. b) the periodic table cannot give you the information needed to answer this question. c) it has less neutrons. its mass number is smaller than the one on the periodic table. d) it has more neutrons. its mass number is larger than the atomic mass number for carbon.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied