In the box below write a paragraph about Energy using each of the following keywords at least once and highlight them in your text Potential energy, Temperature, Motion, Joules

Heat, Position, Chemical Energy, Kinetic energy

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

catya your not at all which answer i've seen you do this on another question!

answer7,570,82356 cubic centimeters;

(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