The impact time for a particular collision is 3.0 x 10^-3 seconds and the impulse in the collision is 0.30 newton seconds. what is the force of the collision? a.) 25 newton’s b.) 50 newton’s c.) 1.0 x 10^2 newton’s

Answer

C.) 1.0 x 10^2 Newton’s

Explanation

The Newton's second law of motion states that, the rate of change of momentum is proportional to the force producing it.

∴ F = (mv- mu)/t

  Ft = mv - mu.

The quantity Ft is called the  impulse.

Ft =  0.30 Newton seconds

but t = 3.0 x 10⁻³ seconds

Ft =  0.30 Ns

F × 3.0 x 10⁻³ =  0.30 Ns

F =  0.30 / (3.0 x 10⁻³)

  = 100 N

  Answer =  C.) 1.0 x 10^2 Newton’s

  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