The answer is D have a nice day!
Impulse = change in momentum
The car's momentum was (mass) x (speed)
Momentum = (2400 kg) x (20 m/s)
Momentum = 48,000 km-m/s
To completely stop the car, the impulse = -48,000 km-m/s .
It depends on how many hours!
1 hour = 40km
2 hours = 80km
If Calcium lost two electrons, it would have the same number of electrons as Argon which has 18 electrons.
Answer:
Reflected ray. A ray of light or other form of radiant energy which is thrown back from a nonpermeable or nonabsorbing surface; the ray which strikes the surface before reflection is the incident ray.
