Which compound is an example of an amino acid? a. glycine (nh 2 ch 2 cooh) b. propanoic acid (ch 3 ch 2 cooh) c. ethyl ethanoate (ch 3 cooch 2 ch 3 ) d. acetamide (ch 3 conh 2 )

A. glycine (NH 2 CH 2 COOH).

Explanation:

Hello,

In this case, we understand amino acids as organic compounds that assemble to form high order molecules called proteins, therefore, they are the building blocks of life. Structurally, as shown on the first attached picture, they make up of both an amino group and a carboxily group having the organic chain below. In such a way, the only listed compound that matches with such the aforesaid definitions is glycine whose structure is shown on the other attached document.

Best regards.

(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

50.23 i believe is correct but don't quote me on that.