Abaseball player hits a foul ball vertically off his bat. the ball goes straight up and then falls back down. just before it hits the ground, the catcher catches the ball. the height of the ball t seconds after it is struck can be described by the function s(t)=-16t^2+80 t + 1 here, the height of the ball above the ground, s, is measured in feet. find the function, v(t), that describes the velocity of the ball at time t. v(t) = click here to preview your answer. find the function, a(t), that describes the acceleration of the ball at time t. a(t) = click here to preview your answer.

  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

50 inches should be the resultant vector

come closer and become far apart and become steam/gas

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.