Unit Exam --- forces and newton's laws

The tendency of an object to resist any change in its motion is called ___.

• resistance

• friction

• net force

• inertia

Which statement describes friction?

• the ability to change shape without breaking

• a force that acts to resist motion

• an attractive force that acts in the direction of mass

• a force that pulls or stretches a material

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An 1800kg car has an acceleration of 3.8m/s². If you are calculating the force acting on the car, what units will your answer have?

• newtons

• m/s²

• kg

• grams

Tags

NGSS.HS-PS2-1

The diagram shows the forces acting on an object moving in the rightward direction. Which statement is true?

• the object is speeding up

• the object is slowing down

• the object is moving at a constant speed

Tags

NGSS.HS-PS2-1

The diagram shows the forces acting on an object moving in the leftward direction. Which statement is true?

• the object is speeding up

• the object is slowing down

• the object is moving at constant speed

Tags

NGSS.HS-PS2-1

According to Newton's 2nd law, what causes an object to accelerate?

• the normal force

• friction

• inertia

• net force

Tags

NGSS.HS-PS2-1

Newton's 3rd law describes ___.

• how force and acceleration are related

• how an object stays in motion

• action-reaction forces

• the inertia of any object with mass

Tags

NGSS.MS-PS2-1

Two forces are shown in the diagram. Which force is the force exerted by the rope on the girl?

• F₁

• F₂

Tags

NGSS.HS-PS2-1

Which free-body diagram correctly depicts the forces acting on the 10kg mass? The objects are not moving.

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

If an object such as a book is at rest on a table, what can you say about the forces acting on the book?

• The net forces are downward in the direction of gravity

• The net force is zero and the object is in equilibrium.

• There are no net forces acting on the object because it is not moving.

• The friction force and the normal force are keeping the book at rest.

Tags

NGSS.HS-PS2-1