Various Forms of Energy

Visual Representations

100

Name this form of energy from the picture below.

Kinetic Energy

200

Name this form of energy from the picture below.

Elastic Potential Energy

300

Name the energy form based on the picture below.

Mechanical Energy

400

Name the energy form based on the picture below.

Gravitational potential Energy

500

The motion of hitting a baseball with a bat before the baseball is hit is an example of what two forms of energy?

Gravitational Potential and Kinetic

Mechanical Energy

100

Mechanical Energy is the energy that is possessed by an object due to its motion or due to its position. True or False?

True

200

Is mechanical energy a form of kinetic energy? (Yes or no)

Yes

300

Name the formula for Mechanical Energy

Emechanical=U+K

U=potential energy

K=kinetic energy

400

At what position does a roller coaster have the greatest potential energy?

A: towards the bottom of the hill

B: At the top of the hill

C: At the top of a smaller hill

D: Halfway down the hill

B

500

A system has a potential energy of 5J and a kinetic energy of 110J. What is its mechanical energy?

potential energy + kinetic energy

5+110=115J

Kinetic Energy

100

Kinetic energy is energy that a body possesses by virtue of being in motion. True or False?

True

200

Is Kinetic Energy a less broad term for mechanical energy? (Yes or no)

No, it is a more broad term

300

Name the formula for Kinetic Energy

KE= 1/2mv^2

m=mass (kg)

v=velocity (m/s)

400

Another word for kinetic energy could be ------ energy

A: Stored

B: Moving

C: Potential

D: Safe

B

500

A motorcycle with a mass of 150 kg is moving with a speed of 15m/s. What is the kinetic energy of the motorcycle?

KE = ½ mv^2 

m =  150 kg

v = 15 m/s 

KE = (½)(150kg)(15m/s)^2

KE = ½ (150kg)(225)

KE = 16875J 

Gravitational Potential Energy

100

Gravitational Potential Energy is power derived from using physical or chemical resources, mainly to provide light and heat or to work machines. True or False

False

Gravitational Potential energy is the energy an object possesses because of its position in a gravitational field.

200

Does gravitational potential energy have an influence on mechanical energy? (Yes or No)

Yes

300

Name the formula for Gravitational Potential Energy

U= mgh

m= mass

g= gravitational field

h= height

400

The maximum value of gravitational potential energy is zero. (True of False)

True

Since the reference for gravitational potential energy is taken at infinity, conventionally, we denote any finite value of gravitational potential energy, except zero, as a negative number. Hence, the most significant value of gravitational potential energy is zero.

500

A diver at the top of a 10.0 m high diving platform has a mass of 50.0kg. What is her gravitational potential energy?

PE = mgh

PE = (50.0kg)(9.8m/s^2)(10.0m)

PE = 4900 kg*m^2/s^2 = 4900J

Elastic Potential Energy

100

Elastic Potential Energy is energy that is possessed by an object due to its motion or due to its position. True or False?

False

Elastic Potential Energy is energy stored as a result of applying a force to deform an elastic object

200

Does elastic potential energy require an applied force? (Yes or no)

Yes

300

Name the formula for Elastic Potential Energy.

U=1/2(k)(deltax)

k=spring constant

deltax= change in position

400

Which factor affects Elastic Potential Energy?

A: Mass

B: Charge

C: Pull

D: Distance

B

500

A spring with a spring constant of 2.6 N/m is stretched a distance of 0.7m. What is the elastic potential energy in the system? 

k = 2.6 N/m

d = 0.7 m 

PE(elastic) = ?

PE(elastic) = ½ KX^2

PE(elastic) = ½(2.6)(0.7)^2

PE(elastic) = 0.637 J