Potential Energy

Potential Energy

But first, lets review what we have already learned ​

Multiple Choice

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

Multiple Choice

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

Multiple Choice

Which type of energy increases when you compress a spring?

• elastic potential energy
• kinetic energy
• radiant energy
• sound energy

Multiple Choice

Energy that is due to an object being compressed or stretched is called

• elastic potential energy

• kinetic energy

• potential energy

• gravitational potential energy

Multiple Choice

What is the potential energy stored in the bonds of a chemical compound called?

• Thermal potential energy

• Mechanical potential energy

• Kinetic potential energy

• Chemical potential energy

Multiple Choice

Explain how the potential energy of a chemical compound is released during a chemical reaction.

• The potential energy is released when the compound is cooled

• The potential energy is released as the chemical bonds are broken and new bonds are formed.

• The potential energy is released when the compound is heated

• The potential energy is released when the compound is left undisturbed

Multiple Choice

The table provides definitions for four kinds of forces. Which option matches each force with its correct position in the table?

• A. 1: Gravity; 2: Friction; 3: Applied Forces; 4: Magnetism

• B. 1: Magnetism; 2: Gravity; 3: Applied Forces; 4: Friction

• C. 1: Gravity; 2: Friction; 3: Magnetism; 4: Applied Forces

• D. 1: Applied Forces; 2: Friction; 3: Gravity; 4: Magnetism

Multiple Choice

Look at the diagram. Free-body diagrams show all forces acting on an object in a certain scenario. In this diagram, a student is pushing a textbook across a desk from left to right. Which arrow represents the force of friction acting on the textbook?

• F_A

• F_B

• F_C

• F_D

Multiple Choice

Look at the diagram. Three bar magnets, each with opposing poles, are placed near each other in a straight line. Which of the following variables can change the strength of the magnetic force between the magnets?

• Distance between the magnets

• Color of the magnets

• Material of the table

• Shape of the magnets

Multiple Choice

Look at the image. Which of the following best identifies and describes the force shown?

• The apple is being pulled toward the ground by gravity due to the strong gravitational force of Earth.

• The apple fell from the tree and toward the ground due to friction of the wind pushing past the apple.

• The apple is being pulled toward Earth due to the strong magnetic pull of Earth.

• The apple is being pushed toward Earth due to applied forces once it breaks free from the branch.

Multiple Select

A metal paper clip lying still on a desk is acted on by multiple forces. When a

magnet is brought close to the paper clip, it moves toward the magnet.

Select all options that identify and describe the forces acting on the paper clip.

• Friction between the desk and paper clip causes it to stay still before the

  magnet acts upon it.

• Magnetic force between the paper clip and magnet causes the paper clip to

  be pulled toward the magnet without the need for contact.

• Normal contact force between the desk and paper clip before the paper clip is

  acted on by the magnet.

• Gravitational force pulls the paper clip down toward the Earth as it rests on

  the desk due to its great mass.

Multiple Select

Choose all the examples that demonstrate the force of friction.

• A. A bike rolling down a hill

• B. Rubbing hands together to keep warm

• C. Air rushing over and around a car as it drives down the road

• D. A pot resting on a silicone pad to absorb heat from cooking

Match

Match the following forces to how they are working on the cake.

• gravity

• normal force

• friction

attraction of the cake to the table

the force the table is putting on the cake

cake plate rubbing on table

• attraction of the cake to the table

• the force the table is putting on the cake

• cake plate rubbing on table

Multiple Choice

The force of __________________ is a type of friction that works against the motion of falling objects.

• Terminal Velocity
• Gravity
• Free Fall
• Air Resistance

Multiple Choice

A box is acted upon by two forces from opposite directions. What is the net force applied to the box?

• 10N

• 20N

• 30N

• 40N

Multiple Choice

Which correctly identifies the forces shown?

• Force A: Applied; Force B: Friction; Force C: Gravity; Force D: Normal

• Force A: Friction; Force B: Gravity; Force C: Normal; Force D: Applied

• Force A: Applied; Force B: Normal; Force C: Gravity; Force D: Normal

• Force A: Normal; Force B: Friction; Force C: Applied; Force D: Gravity

Multiple Choice

Magnetism is a ________ force that can be either a push or pull. Magnetic force is exerted when a magnet interacts with ________ or with another magnet. In the diagram, two bar magnets are placed near each other with the north pole of one facing the south pole of the other. Since the magnets are placed with their north and south ends near each other, the magnetic force between them will be _____________ .

• 1. noncontact; any object; repulsive

• noncontact; metal; attractive

• contact; any object; attractive

• contact; metal; repulsive

Multiple Select

Which forces are acting on the swimmer in the diagram at A and B? Select all that apply.

• Force A is the frictional force known as water resistance that pulls the swimmer backward.

• Force A is the applied force the swimmer uses to propel themselves through the water.

• Force B is the normal force that is equal to and cancels out the force of gravity pulling the swimmer.

• Force B is the gravitational force pulling the swimmer towards the Earth’s surface.

Multiple Select

Identify and explain what forces are at work as the student attempts to pull themselves up the rope. Select all such forces.

• Earth’s gravitational force is applied downward on the student

• Applied forces act on both the student and the rope during contact.

• Normal force is exerted by the rope on the student equal and opposite to the applied force.

• Applied force is exerted by the student on the rope in the attempt to pull themselves up.