15N
Net force = Force of gravity - Force of air resistance = weight - air resistance = mg - 800N.
Since gravity attracts the ball downward, and air resistance acts upwards (assuming that it falls straight down), you need to subtract the force of gravity (i.e., the weight) minus the air resistance.
The idea is to calculate the downward force of gravity, and then subtract the air resistance, since it acts in the opposite way. This assumes that the ball falls directly downward.
The weight exceeds the force of air resistance, but as the speed increases the air resistance increases, so the net force (weight - air resistance) falls. When the difference becomes zero the acceleration ceases and you have terminal velocity.
The net force on the falling object is the difference between the gravitational force pulling it down (20 N) and the air resistance force pushing against it (4 N). Therefore, the magnitude of the net force on the object is 16 N.
The net force is the difference between the 10N falling object and the 4N of air resistance So you solve 10N-4N is 6N
25-15= 10n
Net force = Force of gravity - Force of air resistance = weight - air resistance = mg - 800N.
Since gravity attracts the ball downward, and air resistance acts upwards (assuming that it falls straight down), you need to subtract the force of gravity (i.e., the weight) minus the air resistance.
The idea is to calculate the downward force of gravity, and then subtract the air resistance, since it acts in the opposite way. This assumes that the ball falls directly downward.
The weight exceeds the force of air resistance, but as the speed increases the air resistance increases, so the net force (weight - air resistance) falls. When the difference becomes zero the acceleration ceases and you have terminal velocity.
The net force would be zero, which means the falling object would no longer be accelerating, and would be falling at terminal velocity, which is a constant velocity. Weight is a downward (negative) force and air resistance is an upward (positive) force. Fnet = weight + air resistance = -12N + 12N = 0N
The net force on a following object
The net force on the falling object is the difference between the gravitational force pulling it down (20 N) and the air resistance force pushing against it (4 N). Therefore, the magnitude of the net force on the object is 16 N.
Since from the description it seems that the forces act in opposite directions, you simply subtract.
The net force on the apple is 0.9 N. This is calculated by subtracting the force of air resistance (0.1 N) from the gravitational force (1 N).
The overall net force acting on a skydiver is the force of gravity minus air resistance. Initially, as the skydiver falls, gravity is the dominant force causing acceleration. As the skydiver gains speed, air resistance increases, eventually balancing out the force of gravity to reach a terminal velocity where the net force is zero.