12.1 PPT Review

Open Ended

Why is it important to understand the effects of forces on the motion of objects in our daily lives?

Multiple Choice

Which of the following is NOT a possible effect of a force on an object?

• Start moving

• Change color

• Speed up

• Change direction

Multiple Choice

Which of the following best describes a force?

• A push or pull that causes a change in an object's state of motion

• A property that keeps objects at rest

• A measurement of an object's mass

• A way to measure temperature

Multiple Choice

Forces change an object's shape through

• acceleration.

• deformation.

• speed.

Multiple Choice

____ materials return to their original shape when the force is removed.

• Elastic

• Inelastic

• Plastic

Multiple Select

Which of the following quantities are vector quantities?

• Displacement

• Velocity

• Acceleration

• Mass

Multiple Choice

The numerical size of the measurement is called

• acceleration.

• force.

• magnitude.

• speed.

Fill in the Blanks

Vectors are often represented graphically by an

, where the length indicates magnitude and the arrowhead shows direction.

Multiple Choice

Combining forces means ___ multiple forces together to find the net force.

• adding

• subtracting

• multiplying

• dividing

Multiple Choice

The total forces acting on an object is called the ___

• calculated force.

• minimal force.

• net force.

• displacement force.

Multiple Choice

What is the resultant force acting on the object shown in the diagram, and in which direction does it act?

• 4 N to the right

• 2 N to the left

• 4 N to the left

• 2 N to the right

Multiple Choice

Which of the following best describes balanced forces?

• They cause a change in the object's motion.

• They occur when the net force is zero.

• They always act in the same direction.

• They are always greater than unbalanced forces.

Multiple Select

Which statements are true about unbalanced forces?

• They occur when one force is greater than the other.

• They do not cause a change in motion.

• They show the effect of force on the object.

• They are always equal in size.

Open Ended

Compare and contrast balanced and unbalanced forces using examples from the diagrams.

Multiple Choice

Friction is the force that ______ relative motion between two surfaces in contact.

• enhances

• opposes

Fill in the Blanks

Friction always acts in the

direction of an object's motion or intended motion.

Match

Match the following

• force exerted by a fluid on an object moving through it

• force that opposes the motion of an object rolling on a surface

• force that resists the sliding motion of two surfaces in contact

• force that must be overcome to get an object at rest to start moving

Fluid Friction

Rolling Friction

Sliding Friction

Static Friction

• Fluid Friction

• Rolling Friction

• Sliding Friction

• Static Friction

Multiple Choice

Which type of friction must be overcome to get an object at rest to start moving?

• Sliding friction

• Rolling friction

• Fluid friction

• Static friction

Open Ended

What pulls falling objects towards Earth?

Multiple Choice

Both gravity and ____ affect the motion of a falling objects.

• air resistance

• temperature

• color of object