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Question 1 A)If multiple forces are acting on an object, which statement is always true?(1 point) Responses The acceleration will be directed in the direction of the net force. The acceleration will be directed in the direction of the net force. The acceleration will be directed in the direction of the gravitational force. The acceleration will be directed in the direction of the gravitational force. The acceleration will be directed in the direction of the normal force. The acceleration will be directed in the direction of the normal force. The acceleration will be directed in the direction of the applied force. The acceleration will be directed in the direction of the applied force. Question 2 A)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 gravitational force is greater than the drag. The gravitational force is greater than the drag. The drag is greater than the gravitational force. The drag is greater than the gravitational force. The net force on the ball is directed upward. The net force on the ball is directed upward. Question 3 A)A boy who exerts a 300-N force on the ice of a skating rink is pulled by his friend with a force of 75 N, causing the boy to accelerate across the ice. If drag and the friction from the ice apply a force of 5 N on the boy, what is the magnitude of the net force acting on him?(1 point) Responses 80 N 80 N 380 N 380 N 70 N 70 N 370 N 370 N Question 4 A)Four friends push on the same block in different directions. Allie pushes on the block to the north with a force of 18 N. Bill pushes on the block to the east with a force of 14 N. Chris pushes on the block to south with a force of 23 N. Debra pushes on the block to the west with a force of 20 N. Assuming it does not move vertically, in which directions will the block move?(1 point) Responses south and west south and west north and west north and west north and east north and east south and east south and east Question 5 A) 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 20 N to the right 20 N to the right 40 N to the left 40 N to the left 40 N to the right 40 N to the right 20 N to the left

1 answer

Sure! Here are the answers to your questions:

Question 1 A) If multiple forces are acting on an object, which statement is always true?

  • Correct Response: The acceleration will be directed in the direction of the net force.

Question 2 A) 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?

  • Correct Response: The gravitational force is greater than the drag.

Question 3 A) A boy who exerts a 300-N force on the ice of a skating rink is pulled by his friend with a force of 75 N, causing the boy to accelerate across the ice. If drag and the friction from the ice apply a force of 5 N on the boy, what is the magnitude of the net force acting on him?

  • Calculating Net Force:
    • Total force exerted by the boy and friend: 300 N (boy) + 75 N (friend) = 375 N
    • Subtract the drag and friction (5 N): 375 N - 5 N = 370 N
  • Correct Response: 370 N

Question 4 A) Four friends push on the same block in different directions. Assuming it does not move vertically, in which directions will the block move?

  • Calculating the net forces in the north-south and east-west directions:
    • North-South: 18 N (North) - 23 N (South) = -5 N (Net force is to the South)
    • East-West: 14 N (East) - 20 N (West) = -6 N (Net force is to the West)
  • Since the net forces are negative for both directions, the block will move South and West.
  • Correct Response: south and west

Question 5 A) 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?

  • Calculating Total Force:
    • Team A total force: 360 N (Darlene) + 400 N (Eric) + 450 N (Keshawn) = 1210 N to the right
    • Team B total force: 350 N (Anita) + 390 N (Frank) + 490 N (Molly) = 1230 N to the left
    • Net force: 1210 N (right) - 1230 N (left) = -20 N (indicating a net force of 20 N to the left)
  • Correct Response: 20 N to the left

Let me know if you have further questions or need additional assistance!