Which statement describes the mass and weight of a textbook on Earth and on the Moon? A. The mass and weight are both greater on Earth than on the Moon.
B. The mass and weight are the same both on Earth and on the Moon.
C. The mass is the same on Earth and the Moon, but the weight is greater on Earth.
D. The weight is the same on Earth and the Moon, but the mass is greater on Earth.

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

the temperature of the gas, in k, not celsius.

10 years is the answer

(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