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Question 1

a. In which section or sections is the cart's kinetic energy increasing?

You might need to choose more than one answer.

(1 point)
Responses

section A
section A

section B
section B

section C
section C

section D
section D

section E
section E
Question 2
b. How would you describe the cart's kinetic energy in section B?(1 point)
Responses

The cart has a constant kinetic energy.
The cart has a constant kinetic energy.

The cart has an increasing kinetic energy.
The cart has an increasing kinetic energy.

The cart has a decreasing kinetic energy.
The cart has a decreasing kinetic energy.

The cart has no kinetic energy.
The cart has no kinetic energy.
Question 3
c. Describe the cart's motion in section E.(1 point)
Responses

The cart is getting slower.
The cart is getting slower.

The cart is getting faster.
The cart is getting faster.

The cart is moving at a constant speed.
The cart is moving at a constant speed.

The cart is not moving.
The cart is not moving.
Question 4
d. What is happening to the cart's kinetic energy is section E?(1 point)
Responses

The kinetic energy is increasing.
The kinetic energy is increasing.

The kinetic energy is decreasing.
The kinetic energy is decreasing.

The kinetic energy is staying the same.
The kinetic energy is staying the same.

The kinetic energy goes down and then up.
The kinetic energy goes down and then up.
Question 5
e. In sections A, B, C, and D, what causes the cart to move?(1 point)
Responses

Joaquin and Susanna stop pushing the cart.
Joaquin and Susanna stop pushing the cart.

The ground transfers energy to the cart.
The ground transfers energy to the cart.

Gravity makes the cart move.
Gravity makes the cart move.

Joaquin and Susanna transfer energy to the cart.
Joaquin and Susanna transfer energy to the cart.
Question 6
f. What is the most likely explanation for the motion of the cart in section E?(1 point)
Responses

The cart started going downhill.
The cart started going downhill.

The sports equipment fell out of the cart.
The sports equipment fell out of the cart.

Joaquin and Susanna stopped pushing the cart and let it roll to a stop.
Joaquin and Susanna stopped pushing the cart and let it roll to a stop.

Someone else helped Joaquin and Susanna push faster.

1 answer

To answer your questions, let's break down the responses based on the provided options.

Question 1: a. In which section or sections is the cart's kinetic energy increasing?

  • Possible Responses:
    • section A
    • section B
    • section C
    • section D
    • section E

Answer: Typically, the cart's kinetic energy would increase in sections where it's accelerating. This could be section A or B, depending on the dynamics in those sections.

Question 2: b. How would you describe the cart's kinetic energy in section B?

  • Responses:
    • The cart has a constant kinetic energy.
    • The cart has an increasing kinetic energy.
    • The cart has a decreasing kinetic energy.
    • The cart has no kinetic energy.

Answer: This would depend on if the cart is speeding up, maintaining speed, or slowing down. If it's accelerating, then "The cart has an increasing kinetic energy." would be correct.

Question 3: c. Describe the cart's motion in section E.

  • Responses:
    • The cart is getting slower.
    • The cart is getting faster.
    • The cart is moving at a constant speed.
    • The cart is not moving.

Answer: If section E indicates the cart is experiencing a decrease in speed, the answer would be "The cart is getting slower."

Question 4: d. What is happening to the cart's kinetic energy in section E?

  • Responses:
    • The kinetic energy is increasing.
    • The kinetic energy is decreasing.
    • The kinetic energy is staying the same.
    • The kinetic energy goes down and then up.

Answer: If the cart is slowing down in section E, then "The kinetic energy is decreasing." would be appropriate.

Question 5: e. In sections A, B, C, and D, what causes the cart to move?

  • Responses:
    • Joaquin and Susanna stop pushing the cart.
    • The ground transfers energy to the cart.
    • Gravity makes the cart move.
    • Joaquin and Susanna transfer energy to the cart.

Answer: If Joaquin and Susanna are actively pushing the cart, the best answer would be "Joaquin and Susanna transfer energy to the cart."

Question 6: f. What is the most likely explanation for the motion of the cart in section E?

  • Responses:
    • The cart started going downhill.
    • The sports equipment fell out of the cart.
    • Joaquin and Susanna stopped pushing the cart and let it roll to a stop.
    • Someone else helped Joaquin and Susanna push faster.

Answer: If the context suggests the cart is slowing down without any additional force acting on it, the best answer is probably "Joaquin and Susanna stopped pushing the cart and let it roll to a stop."

Please confirm if this analysis aligns with the context of your questions!