Exploring Statics and Dynamics in Force Modeling

What is the purpose of a free body diagram?

• To calculate the mass of an object.

• To show the detailed structure of an object.

• To measure the speed of an object.

• To represent the forces acting on an object without worrying about the details.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What is a statics problem?

• A problem where an object is floating.

• A problem where an object is not moving.

• A problem where an object is accelerating.

• A problem where an object is moving at a constant speed.

In a statics problem, what is the net force acting on the object?

• Zero, because the object is not moving.

• Equal to the sum of all forces acting on the object.

• Equal to the gravitational force.

• Equal to the mass times acceleration.

Tags

NGSS.HS-PS2-1

According to Newton's first law, what happens to an object moving at a constant speed in a straight line?

• It will eventually stop.

• It will continue moving in a straight line forever unless acted upon by a force.

• It will start accelerating.

• It will change direction.

What is the net force acting on an object moving with constant velocity?

• Equal to the sum of all forces acting on the object.

• Zero, because there is no acceleration.

• Equal to the gravitational force.

• Equal to the mass times acceleration.

Tags

NGSS.MS-PS2-2

What must be true if an object is accelerating?

• There must be no forces acting on it.

• It must be stationary.

• It must be moving at a constant speed.

• There must be a net force acting on it.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

What is the purpose of creating a free body diagram?

• To measure the speed of an object.

• To show the detailed structure of an object.

• To calculate the mass of an object.

• To simplify the analysis of forces acting on an object.

Tags

NGSS.HS-PS2-1

When summing forces, what does fnet represent?

• The mass of an object.

• The net force acting on an object.

• The gravitational force acting on an object.

• The individual forces acting on an object.

Tags

NGSS.MS-PS2-2

How do you determine the direction of acceleration in a free body diagram?

• It is always upward.

• It points in the opposite direction of the net force.

• It is always downward.

• It points in the same direction as the net force.

What is the key to successfully solving a physics problem involving forces?

• Creating and analyzing a free body diagram.

• Measuring the speed of the object.

• Drawing the detailed structure of the object.

• Calculating the mass of the object.

Tags

NGSS.MS-PS2-2