It will help them stay in better shape resulting in better health, being more physically active, and staying happier as a result.
You would probably have a low frequency due to how much the wavelength is spread out.
Answer:
D) Since the stars would move from East to West just as the Sun and Moon do.
The final velocity of the two pucks is -5 m/s
Explanation:
We can solve the problem by using the law of conservation of momentum.
In fact, in absence of external force, the total momentum of the two pucks before and after the collision must be conserved - so we can write:

where
is the mass of each puck
is the initial velocity of the 1st puck
is the initial velocity of the 2nd puck
v is the final velocity of the two pucks sticking together
Re-arranging the equation and solving for v, we find:

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