In head-on-collisions air bags transform what would have been a ‘hard collision’, without the airbag present, into what is called a ‘soft collision’. using the two defining characteristics of a hard collision as a guild, the results of this experiment, and a little common sense, state what the two basic defining characteristics of a soft collision are. (15 points)

In two we can define a soft collision:

1) A collision depends on the kinetic energy transferred and is therefore linked to the duration in which it occurs. When the duration is extended, the value of the momentum also decreases. Change in momentum will be begative when the final velocity is lesser than the initial velocity just before the impact with mass as constant.

2) For the particular case of the forces. These tend to decrease dramatically. Basically, the impact is not carried out instantaneously, but is diminished and lethargic by means of the bags at a higher level. This physically allows anyone who may have received damage to be suspended first in a few thousand more times in order to reduce the strength they receive. This could be clearly seen in a Force vs. Time graph, in the comparison of the airbags and without them.

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible