The net force on any unconstrained body in the vicinity of any other mass is the sum
of the gravitational and electrical forces between them.
Concerning the body in the question, it doesn't matter whether it happens to be
moving upward or downward. As long as it's not resting on a table, not hanging
on a rope, and not rocket-propelled, the net force acting on it is the sum of the
forces of gravity between it and all of the other masses in the universe. As a
practical matter, if it's not electrically charged, the only force that really counts
is the body's "weight", which is the gravitational force between it and the earth.
downward motion
Gravity is the force that acts vertically downward towards the center of the Earth, pulling objects towards it. This force is responsible for objects falling to the ground when released from a height.
The forces acting on a hanging pen are gravitational force pulling it downward and tension force in the string supporting it. The gravitational force acts vertically downward on the pen due to Earth's gravity, while the tension force in the string acts vertically upward to counterbalance the weight of the pen.
-- the gravitational attraction between the football and the Earth, acting vertically downward; -- the normal force of the ground or the shelf under the football, acting vertically upward. These two forces are precisely equal and opposite. If they're weren't, then the football would be accelerating vertically, not at rest.
-- the gravitational attraction between the football and the Earth, acting vertically downward; -- the normal force of the ground or the shelf under the football, acting vertically upward. These two forces are precisely equal and opposite. If they're weren't, then the football would be accelerating vertically, not at rest.
The force acting on a falling rock is gravity, which pulls the rock downwards towards the Earth's center. As the rock falls, it may also experience air resistance, which opposes its downward motion.
Free fall describes an object that is falling and the only force acting on it is gravity. In free fall, the object is accelerating downward due to the force of gravity without any other forces affecting its motion.
An example of non-concurrent forces would be a book resting on a table where the weight of the book is acting vertically downward and the normal force from the table is acting vertically upward in the opposite direction. Another example is a car driving on a curved road where the centripetal force required for circular motion is acting horizontally inward, while the frictional force between the tires and the road is acting horizontally outward.
Gravity is forcing an object to fall to the ground. Another force is friction from air pressure on the falling object.
The net force acting on a 1-kg freely falling object is equal to its weight, which is the force of gravity pulling it downward. This force is approximately 9.8 newtons (N) on Earth.
True. The overall net force acting on a falling leaf is due to the gravitational force pulling it downward and the air resistance pushing against it as the leaf falls through the air.
The two forces acting on an object that is falling are gravity, which pulls the object downward towards the center of the Earth, and air resistance, which opposes the object's downward motion and slows its fall.