Isaac Newton was a scientist and mathematician who lived in England in the 1600s-1700s. Sometimes, cartoons will depict Isaac Newton as a scientist who was hit in the head by a falling apple and "discovered" gravity. That's not entirely accurate, but there is a bit of truth to the legend. When Newton was a young man, he spent time living away at a school called the University of Cambridge. However, when the bubonic plague caused an epidemic in 1665, the school was temporarily closed, and Newton and his classmates were sent home. While he was at home, he was on property near his family's house when he noticed an apple that was falling from a tree. He wondered why apples always fall straight to the ground instead of falling sideways or even falling upward. When school reopened, he went back and continued his studies. He kept thinking about the falling apple and its straight-down path. As he studied more and more, he eventually developed the ideas that became known as the law of universal gravitation and helped scientists, inventors, and ordinary people to understand motion. Years later, he told the story of the falling apple to a man named William Stuckeley, who later published the story in a biography he wrote about Newton. Interestingly, the same apple tree is still growing on the same property in England, over 350 years later. Question 1 Even though modern scientists have developed new ideas that go beyond Newton's ideas, we still know that gravity causes falling objects to appear to fall straight toward the Earth. The image below shows the positions of a falling ball that was dropped from 10 meters high. a. At which position is the potential energy the greatest? (1 point) Responses 10 m 10 m 8 m 8 m 5 m 5 m 0 m 0 m Question 2 b. At what position is the kinetic energy the greatest?(1 point) Responses 10 m 10 m just below 10 m just below 10 m just above 0 m just above 0 m 0 m 0 m Question 3 c. What is happening to potential energy as the ball is falling?(1 point) Responses Potential energy is decreasing. Potential energy is decreasing. Potential energy is increasing. Potential energy is increasing. Potential energy is staying the same. Potential energy is staying the same. It is impossible to tell. It is impossible to tell. Question 4 d. What is happening to kinetic energy as the ball is falling?(1 point) Responses Kinetic energy is decreasing. Kinetic energy is decreasing. Kinetic energy is increasing. Kinetic energy is increasing. Kinetic energy is staying the same. Kinetic energy is staying the same. It is impossible to tell. It is impossible to tell. Question 5 e. What is happening to total energy as the ball is falling?(1 point) Responses Total energy is decreasing. Total energy is decreasing. Total energy is increasing. Total energy is increasing. Total energy is staying the same. Total energy is staying the same. It is impossible to tell. It is impossible to tell. Skip to navigation

Answer 1

Here are the answers to your questions regarding the falling ball and the concepts of potential and kinetic energy.

Question 1
a. At which position is the potential energy the greatest?
Response: 10 m

Question 2
b. At what position is the kinetic energy the greatest?
Response: just above 0 m

Question 3
c. What is happening to potential energy as the ball is falling?
Response: Potential energy is decreasing.

Question 4
d. What is happening to kinetic energy as the ball is falling?
Response: Kinetic energy is increasing.

Question 5
e. What is happening to total energy as the ball is falling?
Response: Total energy is staying the same.

The falling ball demonstrates the transformation of energy: as the ball falls, its potential energy decreases while its kinetic energy increases, but the total mechanical energy remains constant (assuming negligible air resistance).

Answer 2

Makayla and Aaron are watching a basketball game after school. As they observe different basketballs in the gym, they think about what they learned in class earlier that day. Help them complete these sentences to explain what they learned.(2 points) a. Some objects have energy due to their positions above the ground. This is called . When an object gets higher above the ground, this kind of energy . b. Some objects have energy due to their motion. This is called . When an object's speed gets faster, this kind of energy .

Answer 3

Here are the completed sentences for Makayla and Aaron:

a. Some objects have energy due to their positions above the ground. This is called potential energy. When an object gets higher above the ground, this kind of energy increases.

b. Some objects have energy due to their motion. This is called kinetic energy. When an object's speed gets faster, this kind of energy increases.

Answer 4

Aaron and Makayla want to determine what type of energy each basketball has. c. Identify the type or types of energy described in each situation listed below. You might click only one answer in each row, or you might click both answers in a row. (2 points) potential energy kinetic energy One basketball is stored on a shelf about 4 feet high. One basketball is rolling on the floor. One basketball is falling through the hoop near the top of the basketball goal.

Answer 5

Here's how you can categorize the types of energy for each situation described:

1. One basketball is stored on a shelf about 4 feet high.
   Response: Potential energy

2. One basketball is rolling on the floor.
   Response: Kinetic energy

3. One basketball is falling through the hoop near the top of the basketball goal.
   Response: Both potential energy and kinetic energy (The basketball has potential energy as it is still in the air, and it also has kinetic energy as it is moving.)

Answer 6

for the last question you only have to give one answer

Answer 7

Got it! Here are the updated responses with a single answer for each situation:

1. One basketball is stored on a shelf about 4 feet high.
   Response: Potential energy

2. One basketball is rolling on the floor.
   Response: Kinetic energy

3. One basketball is falling through the hoop near the top of the basketball goal.
   Response: Kinetic energy

In this last situation, even though the basketball has both potential and kinetic energy while falling, if only one answer is required, it is primarily exhibiting kinetic energy as it is in motion.

Answer 8

Sandra and her dad go to the grocery story. As they do their shopping, Sandra's dad asks her about her homework. Sandra remembers that she is supposed to make a list of "real world" examples of energy transfer. Which of the following could be included on a list of examples showing an energy transfer to an object? (2 points) This DOES show an energy transfer to an object. This does NOT show an energy transfer to an object. Sandra's dad stands still while he thinks about what is on the grocery list. Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf. Sandra sees a new kind of breakfast pastry sitting on a high shelf. Sandra's dad pushes the grocery cart to make it start moving.

Answer 9

Here are the classifications for each situation regarding energy transfer:

1. Sandra's dad stands still while he thinks about what is on the grocery list.
   Response: This does NOT show an energy transfer to an object.

2. Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
   Response: This DOES show an energy transfer to an object.

3. Sandra sees a new kind of breakfast pastry sitting on a high shelf.
   Response: This does NOT show an energy transfer to an object.

4. Sandra's dad pushes the grocery cart to make it start moving.
   Response: This DOES show an energy transfer to an object.

In summary, the energy transfer occurs when there is a movement or a force applied to an object (like the milk or the grocery cart), while standing still or merely observing does not involve energy transfer.

Answer 10

Energy be created or destroyed by ordinary physical or chemical process. This concept is called the Throughout the experiment, the total amount of energy must . When potential energy goes down, kinetic energy . When potential energy goes up, kinetic energy

Answer 11

Here are the completed sentences based on the concepts of energy:

Energy cannot be created or destroyed by ordinary physical or chemical processes. This concept is called the law of conservation of energy. Throughout the experiment, the total amount of energy must stay the same. When potential energy goes down, kinetic energy goes up. When potential energy goes up, kinetic energy goes down.

This reflects the principle that energy can change forms but the total energy in a closed system remains constant.