I need help with this assignment, I am mostly confused on part 2, I got part 1.

75 points, and first answer that's correct gets brainliest.

1. 0.4 m/s

2. 1.4875 m/s

Explanation:

1.

Following the law of conservation of momentum, the initial sum of momentum equals the final sum of momentum. Usually, momentum, p=mv where m represent mass and v is the velocity.

Here subscripts 1 and 2 for mass are for ball and table respectively while for velocity, 1 and 2 are the initial velocities of ball and table respectively, 3 and 4 are final velocities of ball and table respectively.

Substituting mass of ball with 0.2 kg while table with 3 kg, since the table is initially at rest then its initial velocity is zero. Also, the initial velocity of ball we substitute with 14 m/s and final velocity of the ball we substitute with 8 m/s then numerically it will be

2.

tex]m_1v_1+m_2v_2= m_1v_3 +m_2v_4[/tex]

Here subscripts 1 and 2 for mass of astronat and space junk respectively while for velocity, 1 and 2 are the initial velocities of astronaut and space junk respectively, 3 and 4 are final velocities of astronaut and space junk respectively.

Substituting mass of astronaut with 80 kg while space junk with 7 kg, since the astronaut is initially at rest then its initial velocity is zero. Also, the initial velocity of space junk we substitute with 11 m/s and final velocity of the space junk we substitute with -6 m/s then numerically it will be

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.