Forces and Motion Concepts

What are the forces acting on a book resting on a horizontal surface?

• Frictional force and gravitational force

• Only gravitational force

• Gravitational force and normal force

• Only normal force

According to Newton's third law, what is the reaction force to the gravitational force on the book?

• Normal force

• Applied force

• Frictional force

• Tension force

What happens to an object when the forces acting on it are unbalanced?

• It accelerates

• It moves at constant speed

• It remains at rest

• It decelerates

Tags

NGSS.MS-PS2-2

What type of friction acts on a block sliding at constant speed?

• No friction

• Kinetic friction

• Static friction

• Rolling friction

If a block is moving at constant speed, what can be inferred about the forces acting on it?

• The block is accelerating

• The forces are balanced

• There is no friction

• The forces are unbalanced