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-- The force of gravity is unchanged before and after.-- The force of air resistance on the skydiver is greater before, and less after,because she is falling slower after the parachute opens.-- The effect on her of air resistance is greater after the parachute is open. Theincreased air resistance itself acts on the parachute, and its effect is transferredto the skydiver through her harness.
Gravity
No. Gravity can be thought of as a force, but that is due to its effect on anything that possesses mass and/or energy. The effect that gravity exerts on any object is proportional to the amount of mass that is responsible for the presence of gravity and is also proportional to the amount of mass possessed by the object experiencing that gravitational presence. Therefore a gravitational field will exert a greater 'force' on a greater mass. However, mass also possesses the characteristic of inertia, which is a measure of resistance to any change to a state of motion - which effectively is a resistance to the effect of gravity. Inertia is also proportional to mass. What this means is that the greater the mass, the greater the pull it experiences due to gravity but at the same time, the greater is its resistance to that pull. Hence all falling objects experience the same acceleration due to the effect of gravity which is not the same as the force. All objects fall at the same rate. ========================= (Note: Gravity does not exert the same force on all objects, which is the reason why big people "weigh" more than smaller people do on the same planet.)
Air resistance has no effect on gravity. The force of friction due to air resistance against a falling object balances part or all of the gravitational force, depending on the object's shape and speed through the air ... just as your hand or a rubber band attached to the object would ... but the full force of gravity is still there.
Gravity is a force and any force acting on a body changes its velocity in the direction of the force.
-- The force of gravity is unchanged before and after.-- The force of air resistance on the skydiver is greater before, and less after,because she is falling slower after the parachute opens.-- The effect on her of air resistance is greater after the parachute is open. Theincreased air resistance itself acts on the parachute, and its effect is transferredto the skydiver through her harness.
-- The force of gravity is unchanged before and after.-- The force of air resistance on the skydiver is greater before, and less after,because she is falling slower after the parachute opens.-- The effect on her of air resistance is greater after the parachute is open. Theincreased air resistance itself acts on the parachute, and its effect is transferredto the skydiver through her harness.
Gravity
No. Gravity can be thought of as a force, but that is due to its effect on anything that possesses mass and/or energy. The effect that gravity exerts on any object is proportional to the amount of mass that is responsible for the presence of gravity and is also proportional to the amount of mass possessed by the object experiencing that gravitational presence. Therefore a gravitational field will exert a greater 'force' on a greater mass. However, mass also possesses the characteristic of inertia, which is a measure of resistance to any change to a state of motion - which effectively is a resistance to the effect of gravity. Inertia is also proportional to mass. What this means is that the greater the mass, the greater the pull it experiences due to gravity but at the same time, the greater is its resistance to that pull. Hence all falling objects experience the same acceleration due to the effect of gravity which is not the same as the force. All objects fall at the same rate. ========================= (Note: Gravity does not exert the same force on all objects, which is the reason why big people "weigh" more than smaller people do on the same planet.)
simple, the larger the planet, the greater the force of gravity.
"Free fall" means that gravity is the only force acting on a body.
It doesn't. The force of gravity depends on the masses involved, and their distance. However, air resistance can introduce other forces, that counteract the force of gravity.
Air resistance has no effect on gravity. The force of friction due to air resistance against a falling object balances part or all of the gravitational force, depending on the object's shape and speed through the air ... just as your hand or a rubber band attached to the object would ... but the full force of gravity is still there.
The gravity from the Sun is more than the gravity from the Moon. However, the Moon has a greater effect on the tides.The gravity from the Sun is more than the gravity from the Moon. However, the Moon has a greater effect on the tides.The gravity from the Sun is more than the gravity from the Moon. However, the Moon has a greater effect on the tides.The gravity from the Sun is more than the gravity from the Moon. However, the Moon has a greater effect on the tides.
Gravity, air resistance, force produced by the spinning of the ball.
Yes, definitely, so make sure you are not standing under it.
Gravity is not contained, but exerted -- it is a force of acceleration between material objects.But yes, the greater the mass, the greater the mutual attraction to other objects. The property of mass includes both gravity and a resistance to motion or reduction of motion by a force.