Kinetic and Potential Energy

​Kinetic and Potential Energy Lesson

​What is Mechanical Energy?

Mechanical Energy is the sum total of the potential and kinetic energy of an object.

ME = KE + PE

Kinetic Energy is the energy of motion
​Potential Energy is the energy something has because of it's position or condition (stored)

Multiple Choice

____________ is the energy of motion.

• Mechanical

• Kinetic

• Potential

Multiple Choice

Potential Energy is _____________,

• when school could possibly be out and everyone could go outside and just ride bikes

• is the total amount of energy an object has

• is the energy of motion

Multiple Choice

Based on the video, when I throw a ball, _________ energy is being used.

• Kinetic

• Potential

Multiple Choice

Based on the video, When I get ready to throw a ball, _________ energy is being shown.

• Kinetic

• Potential

Multiple Choice

Sliding down a slide is an example of....

• Kinetic Energy

• Potential energy

Multiple Select

Which of these are examples of gravitational potential energy?

• skateboarder at the top of the ramp

• hanging traffic light

• a battery

Multiple Choice

An apple on a tree waiting to fall is an example of....

• Kinetic Energy

• Potential energy

Multiple Choice

Running to second base is an example of....

• Kinetic Energy

• Potential energy

Multiple Choice

Which of the following occurs as the potential energy of an object decreases?

• Its kinetic energy increases.

• Its thermal energy decreases.

• Its chemical energy increases.

Multiple Choice

Every moving thing has energy.

• True

• False

Kinetic Energy

Kinetic Energy Formula

Labeling

Label the kinetic energy formula.

Drag labels to their correct position on the image

kinetic energy

velocity or speed

mass

Multiple Choice

What two factors affect an object's kinetic energy? Look at your formula.

• Mass and Speed

• Mass and Height

• Mass and Weight

Multiple Choice

A bicycle and a person with a total mass of 80 kg are traveling at a velocity of 7 m/s.

What is their kinetic energy?

• 156,800 J

• 1,960 J

• 0.82 J

Multiple Choice

What is the kinetic energy of a 4 kg shotput thrown with a velocity of 13 m/s?

• 676 J

• 3.25 J

• 338 J

Multiple Choice

How much kinetic energy does a moving 6 kg object have if it moves with a velocity of 3 m/s?

• 27 J
• 18 J
• 2 J

Math Response

A cheetah can run briefly with a speed of 31.0 m/s. Suppose a cheetah with a mass of 47.0 kg runs at this speed. What is the cheetah’s kinetic energy?

Type answer here

Correct Answer: 22583.5

Deg^°

Rad

Math Response

You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. What is the ball's kinetic energy? _______ Joules

Type answer here

Correct Answer: 945

Deg^°

Rad

Multiple Choice

Which has more Kinetic Energy: A person running 5 m/s or a car driving 5 m/s?

• The Car

• The Person

• Same

• Neither

Multiple Choice

As speed increases, kinetic energy __________.

• decreases

• increases

• stays the same

Potential Energy

Labeling

Label the parts of the Potential Energy equation

Drag labels to their correct position on the image

9.8 m/s²

mass= kg

height= cm or m

Potential Energy

Multiple Choice

Potential energy depends on ____________.

• mass and height

• height and speed

• mass and speed

Multiple Choice

Calculate the potential energy of an object with a mass of 5 kg placed at a height of 10 meters.

• 450.5 J

• 550.5 J

• 490.5 J

Math Response

Calculate the potential energy of an object with a mass of 5 kg placed at a height of 5 meters.

______ Joules

Type answer here

Correct Answer: 245

Deg^°

Rad

Math Response

What is the potential energy of a 3 kg object at a height of 8 meters?

______ J

Type answer here

Correct Answer: 235.2

Deg^°

Rad

Multiple Choice

Which would have the LEAST gravitational potential energy (GPE)?

• A ball sitting on the ground

• An airplane flying 30,000 feet above the ground

• A rock sitting on top of Mt. Everest

Multiple Choice

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

• Make the object larger

• Raise the object farther off the ground

• Allow the object to roll on the ground

Multiple Choice

What is the value of the Earth's acceleration due to gravity (g)?

• 9.8 m/s²

• 100 m/s²

• 3.14 m/s²