Ask a New Question
Menu

Two kids play a game of tug-of-war, but the flag in the middle of the rope is NOT moving. What force is being applied to the rope?(1 point) Responses The kids apply equal forces in similar directions. The kids apply equal forces in similar directions. The kids apply equal force in opposing directions. The kids apply equal force in opposing directions. A kid applies more force in one direction. A kid applies more force in one direction. One kid applies force and the other does not. One kid applies force and the other does not.

11 answers

The correct response is: The kids apply equal force in opposing directions.

In a tug-of-war where the flag in the middle of the rope is not moving, it indicates that the forces exerted by both kids are equal in magnitude but opposite in direction, resulting in a net force of zero.

A student is moving furniture. Even though table A and table B are the same size, table A requires more force to move. Why?(1 point) Responses Table A has less weight than table B. Table A has less weight than table B. Table A has greater volume compared to table B. Table A has greater volume compared to table B. Table A has less density than table B Table A has less density than table B Table A has a greater mass than table B.

The correct response is: Table A has a greater mass than table B.

If both tables are the same size but one requires more force to move, it is likely that the table requiring more force (Table A) has a greater mass and, therefore, greater weight, which increases the force necessary to move it.

Newton's First Law says that an object at rest will remain at rest, and an object in motion will remain in motion unless it is acted on by an outside force. This is the law of__________.(1 point) Responses inertia inertia gravity gravity momentum momentum velocity

The correct response is: inertia.

Newton's First Law of Motion is commonly referred to as the law of inertia, which describes the tendency of objects to maintain their state of motion or rest unless acted upon by an external force.

A student is investigating mass and acceleration. The student applies the same force of 40 N force to two boxes that have the same size and shape. Box 1 experiences an acceleration of 10 m/s^2 and box 2 experiences an acceleration of 5m/s^2. The student claims that box 1 must have a smaller mass than box 2. Which argument best supports the student's claim?(1 point) Responses Heavier objects need greater force than lighter objects to accelerate at the same rate. Heavier objects need greater force than lighter objects to accelerate at the same rate. Heavier objects need less force than lighter objects to accelerate at the same rate. Heavier objects need less force than lighter objects to accelerate at the same rate. Lighter objects need greater force than heavier objects to start moving but will accelerate at the same rate. Lighter objects need greater force than heavier objects to start moving but will accelerate at the same rate. Lighter objects need less force than heavier objects to start moving but will accelerate at the same rate. Lighter objects need less force than heavier objects to start moving but will accelerate at the same rate.

The correct response is: Heavier objects need greater force than lighter objects to accelerate at the same rate.

This supports the student's claim because if Box 1 is experiencing a higher acceleration than Box 2 while both are subjected to the same force, then Box 1 must have a smaller mass. According to Newton's second law (F = ma), for the same force, an object with a smaller mass will accelerate more than an object with a larger mass.

Two forces act on an object. One force has a magnitude of 30N directed west, and the other force has a magnitude of 12 N directed east. What is the net force on the object?(1 point) Responses 18N east 18N east 42 N east 42 N east 18N west 18N west 42N west

To find the net force, we need to consider the direction of the forces.

  • The force acting west is 30 N.
  • The force acting east is 12 N.

We can calculate the net force by subtracting the eastward force from the westward force:

\[ \text{Net Force} = 30, \text{N (west)} - 12, \text{N (east)} = 30, \text{N} - 12, \text{N} = 18, \text{N (west)} \]

So, the correct response is: 18 N west.

While driving you hit the brakes and feel your body move forward before the seatbelt stops you. Your body moving forward is an example of (1 point) Responses equilibrium equilibrium balanced forces balanced forces inertia inertia friction

The correct response is: inertia.

Your body continues to move forward due to inertia, which is the tendency of an object to resist changes in its state of motion. When the brakes are applied, the car slows down, but your body stays in motion until the seatbelt exerts a force to stop you.