Solids are just vibrating and they cannot move past each other
the liquids they move freely and move past each other
Answer:
- 1.67 m/s
Explanation:
mass of first ball, m = 10 kg
mass of second ball, M = 20 kg
initial velocity of first ball, u = 5 m/s
initial velocity of second ball, U = - 5 m/s (direction is opposite to the first ball)
Let the final velocity of the combined mass is V.
Use the principle of conservation of linear momentum
Momentum before collision = Momentum after collision
m u + M U = ( m + M) V
10 x 5 + 20 x (-5) = (10 + 20) x V
50 - 100 = 30 V
- 50 = 30 V
V = - 1.67 m/s
Thus, the combined mass moves in the negative x axis direction with the velocity of 1.67 m/s.
Answer: Net force=20N a=F/m=4
Answer:
Emperor penguins are near the top of the Southern Ocean’s food chain. They have a varied menu that changes with the season. Some prey items are more important than others. One of the most frequently eaten prey species is the Antarctic silverfish Pleuragramma antarcticum. They also eat other fish, Antarctic krill and some species of squid. Most prey items are small. Since they are very cold when ingested, their small size makes it easier to bring food up to body temperature to digest it.
