Answer:
0.069 J
Explanation:
mass of first ball (M1) = 0.839 kg
mass of second ball (M2) = 0.839 kg
initial velocity of first ball (U1) = 0.406 m/s
initial velocity of second ball (U2) = 0 m/s
For head on elastic collisions of equal masses, the velocities of the masses always changes.and this has also been clearly stated in the question. Hence the velocity if mass A will interchange with that of mass B after collision.
therefore
final velocity of first ball (V1) = 0 m/s
final velocity of second ball (V2) = 0.406 m/s
kinetic energy of second ball after collision = 0.5m
= 0.5 x 0.839 x 0.406 x 0.406 = 0.069 J
<span>Crust: The thin, outer layer of the earth. Less than 1% of the Earth's mass.Made of solid rock, broken into plates.
Mantle: Molten rock on which plates float. Contains 67% of the earth's mass.
<span>
Core: Inner layer of the Earth. Made of both solid and liquid metals.</span></span>
Would that be 10?
.1 second per revolution, so 10 rps
The fetus relies upon its mother as it develops. These are some of the things it needs:
<span>protection against knock and bumps, and temperature changes
oxygen for respiration
nutrients (food and water)
</span>
The developing fetus also needs its waste substances removing.
The fetus is protected by the uterus and the amniotic fluid, a liquid contained in a bag called the amnion.
