Physics_A_062525

Which statement gives a complete description of any object that is in equilibrium?

• There are no forces acting.

• There is no resultant force.

• There is no resultant force and no resultant turning effect.

• There is no resultant turning effect.

When all the sum of forces acting on an object is equal to zero what it means? Select more than one answer

• The object will move

• The object will stay at rest

• The forces are not in equilibrium

• The forces are in equilibrium

Tags

NGSS.MS-PS2-2

For an object at rest on a horizontal surface, the __________  must equal the object's weight

• Net Force

• Support Force

• Force

• Equilibrium

Haile's plane travels forward for a few feet and

then begins to fall. What would explain the

plane's ability to travel forward for a few feet

without falling?

• The speed of the plane is equal to the speed of

  the oncoming air that pushes on the plane.

• The speed of the plane is greater than the

  speed of the oncoming air that pushes on the

  plane.

• The force of the air pushing up on the plane is

  equal to the force of gravity pulling down on the

  plane.

• The force of gravity pulling down on the plane is

  greater than the force of the air pushing up on

  the plane.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of the following best describes the condition for an object to remain at rest on a flat surface?

• The net force acting on the object is zero.

• The object is moving at a constant speed.

• The force of gravity is greater than the support force.

• The support force is less than the object's weight.

If a book is placed on a table and does not move, which pair of forces are balanced?

• Normal force and applied force

• Friction and gravity

• Gravity and normal force

• Gravity and tension

An elevator is moving upward at a constant speed. What can be said about the forces acting on it?

• The upward force is greater than the downward force.

• The net force is directed upward.

• The upward and downward forces are equal.

• The downward force is greater than the upward force.

Which of the following situations best demonstrates an object in equilibrium?

• A car accelerating on a straight road.

• A book sliding down a sloped desk at constant speed.

• A ball resting motionless on the ground.

• A rocket taking off from the launch pad.

If the net force acting on an object is zero, what must be true about the object's motion?

• The object must be at rest.

• The object must be moving at a constant velocity or at rest.

• The object must be accelerating.

• The object must be moving in a circle.

When a person stands still on the floor, which two forces are balanced?

• Normal force and gravity

• Applied force and friction

• Normal force and tension

• Friction and gravity