Term
| The amount of air resistance on an object depends on the ___, ___, and ___ of the object. |
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Definition
1. speed
2. size
3. shape |
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Term
| Air resistance slows down _____. |
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Definition
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Term
| _____ occurs between the surface of the falling object and the air that surrounds it. |
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Definition
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Term
| The force of air resistance increases _______. |
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Definition
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Term
| As an object falls, it accelerates and its ____ increases. |
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Definition
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Term
| The object then falls at a constant velocity, which is called the __________. |
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Definition
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Term
| An object is in _______ only if gravity is pulling it down and other forces are acting on it. |
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Definition
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Term
| _____ is a measure of gravitational force. |
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Definition
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Term
| the size of the force depends on the _______ and the _______. |
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Definition
| masses of the objects, and the distance between them |
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Term
| An object is said to be ____ when it is traveling in a circular or nearly circular path around another object. |
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Definition
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Term
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Definition
| An orbit is formed by combining two motions; a forward motion and a free fall toward Earth. The path that results is a curve that matches the curve of Earth's surface. |
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Term
| The unbalanced force that causes objects to move in a circular path is called a _______. |
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Definition
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Term
| ______ provides the centripetal force that keeps objects in orbit. |
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Definition
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Term
| The word "centripetal" means ______ |
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Definition
| toward the center of the earth |
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Term
| _______ is the curved path an object follows when thrown or propelled near the surface of the Earth. For example, the orbit of the space shuttle around the Earth. |
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Definition
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Term
| Projectile Motion has 2 componets - _____ and _______. |
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Definition
| Horizontal motion and Vertical motion |
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Term
| Examples of objects in projectile motion.. |
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Definition
| 1) a football being passed 2) water sprayed by a sprinkler 3) an athlete doing a high jump 4) a swimmer diving into water |
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Term
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Definition
| is motion that is perpendicular to the ground. |
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Term
| Air Resistance slows or stops ______ of falling objects. |
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Definition
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Term
| ______ was able to state rules taht describe the effects of forces on the motion of objects. |
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Definition
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Term
| Newton's First Law of Motion |
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Definition
| an object at rest remains at rest and an object in motion remains in motion at a constant speed and in a straight line unless acted on it by an unbalanced force. |
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Term
| Because of ____, the motion of the object changes. |
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Definition
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Term
| Newtons first law of motion is sometimes called the _______. |
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Definition
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Term
| ______ is the tendency of all objects to resist any change in motion. |
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Definition
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Term
| An object with a small mass has ____ inertia than an object with a large mass. |
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Definition
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Term
| Newton's second law of motion |
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Definition
| the acceleration of an object depends on the mass of the object and the amount of force applied |
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Term
| An objects acceleration ____ as the force on it increases. |
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Definition
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Term
An objects acceleration ____
as the force on it decreases. |
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Definition
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Term
| An objects acceleration ___ as its mass increases. |
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Definition
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Term
| An objects acceleration increases as the mass on it _______. |
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Definition
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Term
| The ______ of an object is always in the same direction as the force applies. |
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Definition
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Term
| Newton's third law of motion |
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Definition
| whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first |
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Term
| _______ is a property of a moving object that depends on the object's mass and velocity, |
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Definition
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Term
| Examples of actions and reaction force pairs: |
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Definition
A) the shuttle's thrusters push the exhaust gases downwads as the gases push the shuttle upward with an equal force.
B) You exert a force on a chair when you sit on it. Your weight pushing down on the chair is the action force. The reaction force is the force exerted by the chair that pushes up on your body and is equal to your weight. |
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