It’s for my chemistry assignment A brick of gold has a mass of 1.00000Kg and measures to be 11.23cm long, 5.30 cm wide and 0.870 cm think. A.) What is the density of gold? B.) If you find a nugget of gold with the mass of 127.23 g, what is the volume of this nugget?

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

(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