04.03 Forms of Energy
1. The Washington Monument is 555 feet tall.
A. If 1 meter = 3.28 feet, what is the height of the Washington Monument in meters?
i. .28 = 169.164
B. A worker assigned to the restoration of the Washington Monument is checking
the condition of the stone at the very top of the monument. A nickel with a mass
of 0.005 kg is in her shirt pocket. What is the gravitational potential energy (GPE)
of the nickel at the top of the monument?
i. m = 0.005 kg
ii. g = 9.80 m/s2
iii. h = 169.164 m
iv. GPE =?
v. GPE = mgh
vi. GPE = (0.005 kg)(9.8 m/s2)(169.164 m)
vii. GPE = 8.289 (kg)(m/s2)(m)
viii. GPE = 8.289 (kg)(m2/s2)
ix. GPE = 8.289 J
x. GPE ≈ 8.3 J
C. What is the kinetic energy (KE) of the nickel in her shirt pocket at the top of the
monument?
i. m = 0.005 kg
ii. v = 0 m/s
iii. KE =?
iv. KE = 1/2mv2
v. KE = (0.5)(0.005 kg)(0 m/s)2
vi. KE = 0 J
D. If the nickel accidentally falls out of her pocket, what will happen to the
gravitational potential energy (GPE) of the nickel as it falls to the ground?
i. As the nickel falls to the ground the GPE gets used up.
E. If the nickel accidentally falls out of her pocket, what will happen to the kinetic
energy (KE) of the nickel as it falls to the ground?
i. As the nickel falls to the ground the amount of KE will increase.
2. Consider the concepts of kinetic energy (KE) and gravitational potential energy (GPE) as
you complete these questions. A ball is held 1.4 meters above the floor. Use the terms
KE of GPE as your answers.
A. When the ball is held motionless above the floor, the ball possesses only GPE
energy.
B. If the ball is dropped, its GPE energy decreases as it falls.
This study source was downloaded by 100000850872992 from CourseHero.com on 03-01-2023 06:40:10 GMT -06:00
https://www.coursehero.com/file/51578461/0403-Forms-of-Energydocx/
1. The Washington Monument is 555 feet tall.
A. If 1 meter = 3.28 feet, what is the height of the Washington Monument in meters?
i. .28 = 169.164
B. A worker assigned to the restoration of the Washington Monument is checking
the condition of the stone at the very top of the monument. A nickel with a mass
of 0.005 kg is in her shirt pocket. What is the gravitational potential energy (GPE)
of the nickel at the top of the monument?
i. m = 0.005 kg
ii. g = 9.80 m/s2
iii. h = 169.164 m
iv. GPE =?
v. GPE = mgh
vi. GPE = (0.005 kg)(9.8 m/s2)(169.164 m)
vii. GPE = 8.289 (kg)(m/s2)(m)
viii. GPE = 8.289 (kg)(m2/s2)
ix. GPE = 8.289 J
x. GPE ≈ 8.3 J
C. What is the kinetic energy (KE) of the nickel in her shirt pocket at the top of the
monument?
i. m = 0.005 kg
ii. v = 0 m/s
iii. KE =?
iv. KE = 1/2mv2
v. KE = (0.5)(0.005 kg)(0 m/s)2
vi. KE = 0 J
D. If the nickel accidentally falls out of her pocket, what will happen to the
gravitational potential energy (GPE) of the nickel as it falls to the ground?
i. As the nickel falls to the ground the GPE gets used up.
E. If the nickel accidentally falls out of her pocket, what will happen to the kinetic
energy (KE) of the nickel as it falls to the ground?
i. As the nickel falls to the ground the amount of KE will increase.
2. Consider the concepts of kinetic energy (KE) and gravitational potential energy (GPE) as
you complete these questions. A ball is held 1.4 meters above the floor. Use the terms
KE of GPE as your answers.
A. When the ball is held motionless above the floor, the ball possesses only GPE
energy.
B. If the ball is dropped, its GPE energy decreases as it falls.
This study source was downloaded by 100000850872992 from CourseHero.com on 03-01-2023 06:40:10 GMT -06:00
https://www.coursehero.com/file/51578461/0403-Forms-of-Energydocx/
