Question

imagine a scenario in which an animal’s force is pushing itself forward 5 n, friction is pushing it 4 n backward, gravity is pushing the animal 10 n down, and the animal is pushing itself 10 n up. describe the movement of the animal. (1 point)

it only moves forward because there is a net force forward.

it moves 10 n down and 10 n up as those are the greatest forces acting on the animal.

it moves 29 n forward because that’s the net force.

it moves forward and upward because those are the greatest net forces.

Explanation:

1. First, analyze vertical forces: Gravity (10 N down) and upward force (10 N up) are equal in magnitude and opposite in direction, so net vertical force is \(10 - 10 = 0\) N. This means no vertical movement.
2. Then, analyze horizontal forces: Forward force (5 N) and backward friction (4 N). Net horizontal force is \(5 - 4 = 1\) N forward. So there is a net force forward, causing the animal to move forward.
3. Evaluate options:

• Option 1: Correct, as net force forward exists (vertical forces balance).
• Option 2: Vertical forces balance, so no movement up/down. Incorrect.
• Option 3: Net force is 1 N forward, not 29 N. Incorrect.
• Option 4: Vertical forces balance, so no upward movement. Incorrect.

Answer:

A. It only moves forward because there is a net force forward.