What is the condition for an object to be in equilibrium?

• It is rotating.

• It is moving at a high speed.

• It is accelerating.

• The net force acting on it is zero.

If an object is in equilibrium, what can we say about its motion?

• It can be either at rest or moving with constant velocity.

• It must be moving in a circular path.

• It must be at rest.

• It must be accelerating.

According to Newton's second law, what happens if the net force on an object is zero?

• The object's acceleration will be zero.

• The object will decelerate.

• The object will change direction.

• The object will accelerate.

What does it mean if an object has zero acceleration?

• Its velocity is changing.

• It is moving in a circle.

• Its velocity is constant.

• It is speeding up.

What is the relationship between acceleration and velocity for an object in equilibrium?

• Acceleration is zero, and velocity is constant.

• Acceleration is constant, and velocity is zero.

• Both acceleration and velocity are constant.

• Both acceleration and velocity are zero.

Tags

NGSS.HS-PS2-1

What forces act on a book at rest on an incline?

• Only the force of friction.

• Gravity, normal force, and friction.

• Only the normal force.

• Only the force of gravity.

Tags

NGSS.MS-PS2-4

Why does a book on an incline remain at rest?

• Because the net force acting on it is zero.

• Because it is too heavy to move.

• Because there is no friction.

• Because the incline is too steep.

Tags

NGSS.MS-PS2-2

What forces act on a vehicle moving at a constant velocity?

• Only the applied force.

• Gravity, normal force, applied force, and friction.

• Only the normal force.

• Only the force of gravity.

What is translational equilibrium?

• When an object is decelerating.

• When an object is accelerating.

• When the net force acting on an object is zero.

• When an object is rotating.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

What does translational equilibrium imply about an object's motion?

• The object is either at rest or moving with a constant velocity.

• The object is accelerating.

• The object is decelerating.

• The object is moving in a circular path.

Tags

NGSS.HS-PS2-1