# Sol 4.2 Energy And Work

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This is a science sol. It is very important.

• 1.

### The ability to do work

• A.

Work

• B.

Friction

• C.

Energy

• D.

Force

C. Energy
Explanation
Energy is the correct answer because it is the ability to do work. Work is the transfer of energy that occurs when a force is applied to an object and it moves in the direction of the force. Friction is a force that opposes motion and can cause a decrease in energy. Therefore, energy is the overarching concept that encompasses work, friction, and force.

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• 2.

### The result of a force moving an object through a distance.

• A.

Force

• B.

Friction

• C.

Energy

• D.

Work

D. Work
Explanation
Work is the correct answer because it is the result of a force moving an object through a distance. When a force is applied to an object and it is displaced in the direction of the force, work is done. Work is calculated by multiplying the force applied to the object by the distance it is moved. It is a measure of the energy transfer that occurs when an object is moved by a force.

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• 3.

### A push or pull on an object

• A.

Energy

• B.

Work

• C.

Force

• D.

Friction

C. Force
Explanation
Force is the correct answer because it refers to a push or pull on an object. Force is a vector quantity that can cause an object to accelerate or change its shape. It is measured in units of Newtons (N) and can be exerted through contact or at a distance. Force is a fundamental concept in physics and is responsible for the motion and interactions of objects in the universe.

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• 4.

### If an object is moving you know it has ________________________________

kinetic energy
Explanation
kinetic energy or potential energy

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• 5.

### An object that has energy stored in it has _______________.

potential energy
Explanation
kinetic energy or potential energy

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• 6.

### . Terms used to describe the direction of an objectâ€™s motion are ______________________.

Up, down, forward, and backward
Explanation
Move, stop, change speed and change direction OR Up, down, forward, and backward

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• 7.

### When a force acts on an object, the object will usually ____________________________.

Move, stop, change speed and change direction
Explanation
Move, stop, change speed and change direction OR Up, down, forward, and backward

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• 8.

### A moving object tends to stay in motion and a resting object tends to stay at rest unless ______________________________________.

A force acts upon it
Explanation
A force acts upon it, friction, or Moves

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• 9.

### The resistance to motion caused by two objects moving against each other, can cause heat.

• A.

Friction

• B.

Force

• C.

Kinetic energy

• D.

Work

A. Friction
Explanation
Friction is the resistance to motion between two objects moving against each other. This resistance can cause heat to be generated. When two objects rub against each other, the surface irregularities create friction, which converts some of the kinetic energy of the moving objects into heat energy. Therefore, friction is the correct answer as it explains how the resistance to motion can cause heat.

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