Answer: The imaginary line from the Sun to the planet sweeps out equal areas in equal periods of time, so the planet moves slowest when it's furthest from the Sun and fastest when it's closest to the Sun
Explanation:
Kepler’s Laws are three mathematic laws that describe the movement of the planets around the Sun, but it can be generalized for the movement of any body orbiting a bigger one, for example, The Moon orbiting the Earth.
Now, according to Kepler’s Second Law of Planetary motion:
<em>In equal times, the areas swept by the planet in its orbit around the Sun are equal. </em>
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For this to be possible, the speed of the planet must vary. Hence, the planet will <u>move faster near the Sun (</u><em><u>perihelion</u></em><u>) </u>and <u>move slowly when it is away from the Sun (</u><em><u>aphelion</u></em><u>)</u>.
Hence, the correct statement is:
The imaginary line from the Sun to the planet <u>sweeps out equal areas in equal periods of time</u>, so the planet <u>moves slowest when it's furthest from the Sun and fastest when it's closest to the Sun.</u>
Answer:
0.1 m/s
Explanation:
Please see attached photo for explanation.
Mass of 1st cart (m₁) = 500 g
Initial velocity of 1st cart (u₁) = 0.25 m/s
Mass of 2nd cart (m₂) = 750 g
Initial velocity of 2nd cart (u₂) = 0 m/s
Velocity (v) after collision =.?
m₁u₁ + m₂u₂ = v(m₁ + m₂)
(500 × 0.25) + (750 × 0) = v(500 + 750)
125 + 0 = v(1250)
125 = 1250v
Divide both side by 1250
v = 125 / 1250
v = 0.1 m/s
Thus, the two cart will move with a velocity of 0.1 m/s after collision.
Answer:
A) a wolf
Explanation:
an organism is an individual: a wolf
a group: a heard of sheep
a measurement of a compound: a drop of water
an organ: a heart