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samcammm

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$**Given:** - Mass of the ball (m) = 1 kg - Initial velocity (v) = 30 m/s **Required:** - Kinetic Energy (KE) **Solution:** The formula for kinetic energy is: \[ KE = \frac{1}{2} mv^2 \] Substituting the values: \[ KE = \frac{1}{2} \times 1 \, \text{kg} \times (30 \, \text{m/s})^2 \] \[ KE = \frac{1}{2} \times 1 \times 900 \] \[ KE = 450 \, \text{Joules} \] Thus, the kinetic energy of the ball is 450 Joules.$ What is the kinetic energy of a 1-kilogram ball is thrown into the air with an initial velocity of 30 m/sec? list the given required and solution

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Illustration of a 1-kilogram ball in mid-air with arrows indicating its upward motion and labeled with the formula for kinetic energy: KE = 0.5 * m * v².

What is the kinetic energy of a 1-kilogram ball is thrown into the air with an initial velocity of 30 m/sec?

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To determine which ball bounces with the most efficiency, we can calculate the efficiency of each option as the ratio of the height it bounces back to the height from which it was dropped.

**Efficiency formula:**
Efficiency = (New height / Original height) × 100%

Now let's calculate it for each option:

a. Ball from 12m to 6m:
Efficiency = (6m / 12m) × 100% = 50%

b. Ball from 10m to 6m:
Efficiency = (6m / 10m) × 100% = 60%

c. Ball from 12m to 10m:
Efficiency = (10m / 12m) × 100% = 83.33%

d.

Which ball bounces with the most efficiency? a.A ball dropped from 12m that bounces to a new height of 6m b.A ball dropped from 10m that bounces to a new height of 6m c.A ball dropped from 12m that bounces to a new height of 10m d.A ball dropped from 10m that bounces to a new height of 2m

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The correct answer is: **a. The energy can be transferred to the surroundings.**

How can an object lose mechanical energy? a.The energy can be transferred to the surroundings. b.The energy can disappear. c.The energy can be destroyed. d.Objects can't lose mechanical energy

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The object that probably has the most gravitational potential energy is **a. A bowling ball held shoulder high**. This is because gravitational potential energy is determined by the object's mass and height; a bowling ball is heavier than a baseball, and being held shoulder high gives it a greater height compared to the other options.

Which object probably has the most gravitational potential energy? a.A bowling ball held shoulder high b.A baseball held shoulder high c.A bowling ball held waist high d.A baseball held waist high

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Illustration of a spring coiled up, demonstrating its function as a device that stores mechanical energy.

What is a device that can store mechanical energy? a.Spring b.Generator c.Food d.Battery

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All the options listed are true statements regarding different forms of energy storage. However, if you are looking for which option might be perceived as false in certain contexts, none would typically be considered false since each describes a valid form of energy storage. If you need further clarification on a specific option, feel free to ask!

Which of the following is FALSE? A. Thermal energy is stored in an oven b.Electrical energy is stored in a battery c.Mechanical energy is stored in a spring d.Chemical energy is stored on the body as fat cells

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The statement that is FALSE is:

A. Thermal energy is stored in an oven.

While an oven can generate and transfer thermal energy, it doesn't store thermal energy in the same way that a battery stores electrical energy, a spring stores mechanical energy, or the body stores chemical energy as fat cells.

Which of the following is FALSE? A. Thermal energy is stored in an oven b.Electrical energy is stored in a battery c.Mechanical energy is stored in a spring d.Chemical energy is stored on the body as fat cells

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The statement that is FALSE is:

A. Thermal energy is stored in an oven.

While an oven can generate thermal energy, it does not store it in the same way that a battery stores electrical energy or a spring stores mechanical energy.

Which of the following is FALSE? A. Thermal energy is stored in an oven b.Electrical energy is stored in a battery c.Mechanical energy is stored in a spring d.Chemical energy is stored on the body as fat cells

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Illustration of a large truck driving quickly on a road, emphasizing motion and speed.

Which object probably has the most kinetic energy? A. A large truck driving slowly B. A small car driving slowly C. A large truck driving quickly D. A small car driving quickly

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Illustration of a large truck and a small car in a split scene, one side showing the truck driving quickly and the other side the small car driving quickly, emphasizing their kinetic energy.

Which object probably has the most kinetic energy? A. A large truck driving slowly B. A small car driving slowly C. A large truck driving quickly D. A small car driving quickly

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B. Energy cannot be created or destroyed, but transferred from one form to another.

Define the key physics principal of “Conservation of Energy.” A. Energy cannot be translated or transferred, but manipulated from one form to another. B.Energy cannot be created or destroyed, but transferred from one form to another. C. Energy cannot be transferred or reversed, but solidified from one form to another. D.Energy cannot be lost or found, but given to one form or another.

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B. Energy cannot be created or destroyed, but transferred from one form to another.

Define the key physics principal of “Conservation of Energy.” A. Energy cannot be translated or transferred, but manipulated from one form to another. B.Energy cannot be created or destroyed, but transferred from one form to another. C. Energy cannot be transferred or reversed, but solidified from one form to another. D.Energy cannot be lost or found, but given to one form or another.

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The correct answer is B. Energy cannot be created or destroyed, but transferred from one form to another.

Define the key physics principal of “Conservation of Energy.” A. Energy cannot be translated or transferred, but manipulated from one form to another. B.Energy cannot be created or destroyed, but transferred from one form to another. C. Energy cannot be transferred or reversed, but solidified from one form to another. D.Energy cannot be lost or found, but given to one form or another.

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B. Energy cannot be created or destroyed, but transferred from one form to another.

Define the key physics principal of “Conservation of Energy.” A. Energy cannot be translated or transferred, but manipulated from one form to another. B.Energy cannot be created or destroyed, but transferred from one form to another. C. Energy cannot be transferred or reversed, but solidified from one form to another. D.Energy cannot be lost or found, but given to one form or another.

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