Find the acceleration that cause’s a car’s velocity to change from 31.9 m/s to 59.134 m/s in 8.9 s.

3.06 m/s²

Explanation:

Acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (59.134 m/s − 31.9 m/s) / 8.9 s

a = 3.06 m/s²

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this