What do the following areas of scientific understanding have in common? the understanding of the structure of the Solar System the understanding of how traits are passed from parents to offspring the understanding of the building blocks of matter and life A. The scientific knowledge related to these areas has changed over time. B. We know all there is to know about these areas of science. C. There is no scientific knowledge related to these areas of science. D. The scientific knowledge related to these areas has remained unchanged since their discovery.

A. The scientific knowledge related to these areas has changed over time

Explanation:

може ли да зареждате повече информация, моля

(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