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1. Gravity is a CONTACT FORCE that acts between two separate objects.
2. Gravity is the force exerted by the Earth which is equivalent to the MASS of an object.
3. Friction, unlike gravity, is a NONCONTACT FORCE.
4. The lesser the mass of an object, the greater the PUSH of gravity on it.
5. GRAVITY keeps anything from going up.
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1. 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.
2. The acceleration due to Earth's gravity is called g and is equal to 9.8 m/s2 at Earth's surface. You can calculate the force of gravity on an object using the object's mass and this acceleration. The formula that expresses Newton's second law is F = ma.
3. Hence, gravity is a non-contact force and friction is a contact force.
4. Mass is the measure of an object's matter (what it's made up of). The greater an object's mass, the greater its gravitational force.
5. The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall. Anything that has mass also has gravity. Objects with more mass have more gravity.
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