Question

If a girl holds a ball at waist level and then lifts the ball above her head and holds it there, which of the following is she doing?

A decreasing the ball's magnetic energy
B decreasing the ball's potential energy
C increasing the ball's stored energy
D increasing the ball's kinetic energy

Answer 1

[AI-generated answer — Bot GPT 3.5]

B decreasing the ball's potential energy

Answer 2

Classify each picture as potential or kinetic energy

A man about to swing a bat

A rock on top of a hill

A man swimming

A girl swinging

Answer 3

[AI-generated answer — Bot GPT 3.5]

A man about to swing a bat - potential energy

A rock on top of a hill - potential energy

A man swimming - kinetic energy

A girl swinging - kinetic energy

Answer 4

The molecules of which of the following would have the most kinetic energy?

A boiling water
B an ice cube
C a cold glass of water
D a warm cup of tea

Answer 5

[AI-generated answer — Bot GPT 3.5]

A boiling water

Answer 6

If a baseball and a cannonball are dropped from the same height at the same time, with no air resistance, which ball will hit the ground first?

A The cannonball lands first
B The baseball lands first
C The ball with the larger volume lands first.
D Both balls land at the same time

Answer 7

[AI-generated answer — Bot GPT 3.5]

D Both balls land at the same time

Answer 8

EXTRA CREDIT (1pt of extra credit will be rewarded for a correct answer): Based on its location on the partial periodic table shown above, which element would you predict has chemical properties that are most similar to argon (Ar)?

A Zinc (Zn)
B Helium (He)
C Chlorine (Cl)
D Nitrogen (N)

Answer 9

[AI-generated answer — Bot GPT 3.5]

B Helium (He)

Answer 10

Based on the law of Conservation of Energy, what quantity must always remain the same in a closed system?

thermal energy

potential energy

mechanical (total) energy

kinetic energy

Answer 11

[AI-generated answer — Bot GPT 3.5]

C. Mechanical (total) energy

Answer 12

A bowling ball, baseball, golf ball, and ping pong ball are all rolling down a bowling lane at the same speed. Which one has the most kinetic energy?

bowling ball

golf ball

C baseball

D ping pong ball

Answer 13

[AI-generated answer — Bot GPT 3.5]

A. Bowling ball

Answer 14

If a girl holds a ball at waist level and then lifts the ball above her head and holds it there, which of the following is she doing?

increasing the ball's kinetic energy
B increasing the ball's stored energy
decreasing the ball's magnetic energy
decreasing the ball's potential energy

Answer 15

[AI-generated answer — Bot GPT 3.5]

B increasing the ball's stored energy

Answer 16

Read the following information and then answer the adjoining questions.

Information
Students are collecting data about a roller coaster called the Goliath.
Before riding the roller coaster, students are asked to look at a diagram of the track and evaluate the relative potential energy at four points on the roller coaster. The four points, along with their height in meters (m), are shown on this diagram.

Most roller coasters begin with a large hill where the roller coaster train is lifted up the hill using a motor, such as from 1 to 2 on this diagram of the Goliath. The motor is designed to always move the roller coaster train with the same velocity. At the top of the hill, the roller coaster train continues moving, with no further input of energy.
Measurements of the speed of the train at additional points on the ride indicate that energy is being lost.
The students present two claims for the cause of this energy loss.
Claim 1: The loss of energy is due to the air pushing back on the train as it moves down the track.

Claim 2: The loss of energy is due to the friction of the train wheels with the track.
The Goliath roller coaster train is made up of six cars that have a total mass of 3,300 kilograms (kg) when empty. The students attach a sensor to the train that automatically measures the velocity of the train in meters per second (m/s) as the train reaches the bottom of the first hill. They use these data to calculate the kinetic energy of the train in joules ().
The first test is conducted with an empty train.
A second test is conducted, with enough students riding to fill three cars. The mass of the students is added to the mass of the empty train.
A third test is conducted, with enough students to fill all six cars. Again, the mass of the students is added to the mass of the empty train. The students' data are shown in the table.
10
Number of Full Cars: 0 3 5

Mass of Train and Students ( kg): 3,300, 3,747, 4,575

Velocity at the Bottom of the First Hill ( m/s): 28, 28, 28

Calculated Kinetic Energy (J): 1,300,000, 1,500,000, 1,800,000

Which two statements correctly describe the relative potential energy at various points on the track?

At 4, the the potential energy is greater than the potential energy at 2

At 2, the potential energy is greater than the potential energy at 3

At 3, the potential energy is greater than the potential energy at 4

At 1, the potential energy is greater than the potential energy at 3

Answer 17

[AI-generated answer — Bot GPT 3.5]

- At 2, the potential energy is greater than the potential energy at 3

- At 1, the potential energy is greater than the potential energy at 3

Answer 18

There’s only 1 answer

Answer 19

[AI-generated answer — Bot GPT 3.5]

At 2, the potential energy is greater than the potential energy at 3

Answer 20

Three possible observations are proposed to test these claims, as shown in the chart. Indicate if each observation would support Claim 1 or Claim 2 by selecting the check boxes in the chart.

The train moves faster after the cars are streamlined.

The tracks are warmer after the train has passed.

The train moves faster after oil is applied to the wheels and

Answer 21

[AI-generated answer — Bot GPT 3.5]

The train moves faster after the cars are streamlined. - Supports Claim 1

The tracks are warmer after the train has passed. - Supports Claim 2

The train moves faster after oil is applied to the wheels - Supports Claim 2

Answer 22

When does a car no longer have kinetic energy?

A When it slows down
B When it moves forwards
C When it moves backwards
D When it stops moving

Answer 23

[AI-generated answer — Bot GPT 3.5]

D When it stops moving

Answer 24

What kind of energy would a textbook lose if you dropped it off of a building?

A chemical energy
B kinetic energy
C potential energy
D electrical energy
E solar energy

Answer 25

[AI-generated answer — Bot GPT 3.5]

C potential energy

Answer 26

Temperature is a way to measure the…energy of particles of matter.

electrical
B
potential
C kinetic
D chemical

Answer 27

[AI-generated answer — Bot GPT 3.5]

C. kinetic

Answer 28

Which of the following determine the amount of kinetic energy an object has?

Speed
Height above the ground
Position
Mass
Distance

Answer 29

[AI-generated answer — Bot GPT 3.5]

Speed

Mass

Answer 30

A father and his 6 year old son race down a mountain on skis. If they're traveling at the same velocity, who has more kinetic energy? Assume the father has more mass than the son.

neither the father or the son will have kinetic energy
they have the same kinetic energy
the father
the son

Answer 31

[AI-generated answer — Bot GPT 3.5]

The father

Answer 32

Explain the following about roller coasters:

• Describe how the coaster car can have kinetic energy and potential energy as it travels through a track. (1 point)
• Can roller coasters have the same amount of kinetic and potential energy at the same time? Justify your response with evidence you learned from this unit. (1 point)
Elaborate your response by using ALL of the following key terms (1 point): stored energy, particles in motion, and transfer.

Note: Keep it short and at 8th grade level please

Answer 33

[AI-generated answer — Bot GPT 3.5]

As a roller coaster car moves along the track, it can have kinetic energy because it is in motion. Additionally, it can have potential energy when it gains height or positions itself at the top of a hill due to its stored energy from the initial lift or being pulled by gravity.

Roller coasters cannot have the same amount of kinetic and potential energy at the same time. This is because energy is constantly transferred between potential energy (stored energy at a height) and kinetic energy (particles in motion) as the coaster moves along the track. For example, when the car ascends a hill, potential energy increases, and kinetic energy decreases as it stops moving and instead gains height. Conversely, when the car descends a hill, potential energy decreases while kinetic energy increases as it speeds up with particles in motion. Therefore, the total energy of the coaster (kinetic and potential) changes continuously as it travels through the track due to this transfer of energy between stored energy and particles in motion.

Answer 34

Make this shorter

Answer 35

[AI-generated answer — Bot GPT 3.5]

As a roller coaster car moves, it can have kinetic energy when in motion and potential energy when it gains height. The coaster cannot have the same amount of both at the same time because energy is transferred between potential (stored energy at height) and kinetic (motion). As the car goes up, potential energy increases, and kinetic energy decreases; when going down, potential energy decreases and kinetic energy increases through the transfer of energy.