If a ball is accelerating down through the air with no horizontal motion, what must be true about the net forces acting on the ball?(1 point) Responses The net force on the ball is zero. The net force on the ball is zero. The net force on the ball is directed upward. The net force on the ball is directed upward. The drag is greater than the gravitational force. The drag is greater than the gravitational force. The gravitational force is greater than the drag.
The net force on the ball is directed upward.
The correct answer is: The gravitational force is greater than the drag.
In order to determine what must be true about the net forces acting on the ball, we need to consider the two main forces acting on the ball - gravity and drag.
Gravity is the force that pulls the ball downward towards the Earth. It is usually represented by the symbol "Fg" or "mg", where "m" is the mass of the ball and "g" is the acceleration due to gravity (approximately 9.8 m/s^2).
Drag, on the other hand, is a force that opposes the motion of an object through a fluid (in this case, air). It depends on factors such as the shape of the object, the speed at which it is moving, and the properties of the fluid. Drag is usually represented by the symbol "Fd" or "D".
Since the ball is accelerating downward, we know that the net force acting on it must be in the same direction as its acceleration. Therefore, the drag force (opposing the motion) must be less than the gravitational force (pulling it downward). This means that the gravitational force is greater than the drag force.
Based on this analysis, the correct response would be: "The gravitational force is greater than the drag."
Two teams are playing tug of war. The tables show the members of each team and how much pulling force each team member applies to the rope. Team A Members Pulling Force (N) Darlene 360 Eric 400 Keshawn 450 Team B Members Pulling Force (N) Anita 350 Frank 390 Molly 490 If Team A pulls to the right and Team B pulls to the left, what is the total horizontal net force applied to the rope? (1 point) Responses 40 N to the right 40 N to the right 40 N to the left 40 N to the left 20 N to the left 20 N to the left 20 N to the right
To determine the total horizontal net force applied to the rope, we need to find the difference between the total pulling forces of Team A and Team B.
Total pulling force for Team A = 360 N + 400 N + 450 N = 1210 N
Total pulling force for Team B = 350 N + 390 N + 490 N = 1230 N
Since Team A is pulling to the right and Team B is pulling to the left, we can subtract the total pulling force of Team B from Team A:
Total horizontal net force = Total pulling force for Team A - Total pulling force for Team B
= 1210 N - 1230 N
= -20 N
The negative sign indicates that the net force is in the opposite direction of Team A's pull, which means it is to the left.
Therefore, the correct response is: "20 N to the left."