1.
is aforce between two objects in the universe.
2. Scientist who discovered the principle of gravity is
3. Gravity is a
that acts between two objects even if they are far from each other.
4. The gravitational force also depends on
of the objects.
5. All objects thrown upward will eventually goes
6. The
of the sun keeps the planets stay in orbit.
7. The weight of an object is
to the gravitational force.
8. When you go to the moon, the gravitational pull is weaker because the moon is
than the Earth.
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Answer:
1.Every object in the universe — stars, planets, moons, even you—has gravity. Gravity is a force of attraction between all objects.
2.Sir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature.
3.Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.
4.Newton's law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them. Objects with greater mass have a stronger force of gravity between them.
5.When you throw an object upwards, it will eventually fall back to the ground under the earth's gravity. In fact all objects near the earth's surface fall with a constant acceleration of about 9.8 (we usually take 10 for the sake of simplicity in calculation).
6.gravity
The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
7.The weight W, or gravitational force, is then just the mass of an object times the gravitational acceleration. Since the gravitational constant (g) depends on the square of the distance from the center of the earth, the weight of an object decreases with altitude.
8.The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second. The Moon's surface gravity is weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.
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