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| Give an example of exerting a force. |
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Definition
| Example: A carpenter hammering a nail. |
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| What happens when two forces act in the same direction? |
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| The tendency of an object to resist change in its motion is known as________. |
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| The greater the mass of an object, ___________. |
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Definition
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| One way to increase acceleration is by ___________. |
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Definition
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| The force that one surface exerts on another when two rub against each other is called_________. |
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Definition
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Term
| Give an example of rolling friction. |
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Definition
| Example: Bike tires on the road as you ride. |
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Term
| When the only force acting on a falling object is gravity, the object is said to be ____________. |
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Definition
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| Air resistance is a type of __________. |
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Definition
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| The force of gravity on a person or object at the surface of a planet is known as__________. |
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Definition
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Term
| The law of universal gravitation states that any two objects in the universe_______. |
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Definition
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| Forces can be added together only if they are________. |
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Definition
| acting on the same object. |
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Term
| The product of an object's mass and velocity is called its_________. |
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Definition
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| According to the law of conservation of momentum, when two items collide in the absence of friction, _______. |
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Definition
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Term
| Any force that causes an object to move in a circle is called a ______________. |
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Definition
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Term
| In physical science, a push or a pull is called a ________. |
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Definition
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Term
| The momentum of an object is in the same direction as its _____________. |
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Definition
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Term
| How can you increase the momentum of an object? |
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Definition
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Term
| The amount of matter in an object is called its ____________. |
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Definition
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Term
| Give an example of increasing friction intentionally. |
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Definition
| Example: Throwing sand on an icy driveway. |
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Term
| The force that pulls falling objects toward Earth is called_________. |
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Definition
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Term
| Objects falling through the air experience a type of friction called ____________. |
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Definition
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Term
| According to Newton's third law of motion, when a hammer strikes and exerts a force on a nail, the nail________. |
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Definition
| exerts an equal force back on the hammer. |
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Term
| The SI unit for force is the _______. |
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Definition
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| Balanced forces acting on an object __________. |
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Definition
| never change the object's motion. |
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Term
| The total momentum of a group of objects is conserved unless _________________. |
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Definition
| outside forces act on the objects. |
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Term
| True or False: When the only force acting on a falling object is air resistance, the object is said to be in free fall. |
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Definition
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Term
| True or False: A rocket will move upward as long as the thrust is greater than the force of gravity. |
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Definition
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| True or False: The force that keeps a satellite in Earth orbit is always directed away from the center of Earth. |
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Definition
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Term
| The overall force of an object after all the forces are added together is called the ______ force. |
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Definition
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| Unbalanced forces acting on an object produce a change in the object's ___________. |
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| A measure of an object's _____ is a measure of the object's inertia. |
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Definition
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Term
| One _______ is the force required to accelerate 1 kilogram of mass at 1 meters per second per second. |
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Definition
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Term
| A person traveling in a car that stops suddenly keeps moving forward due to _______. |
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Definition
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| Wet pavement is more slippery than dry pavement because the force needed to overcome ________ friction is less than the force needed to overcome sliding friction. |
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Definition
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Term
| The downward force acting on an object in free fall is the force of ________. |
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Definition
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| A(n) ________ is an object that is thrown. |
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Definition
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Term
| The metric unit that is most often used to describe weight is the _________. |
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Definition
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Term
| The force of gravity between you and Earth is greater than the force of gravity between you and a car because Earth has more _____ than a car. |
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Definition
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Term
| As the distance beween two objects decreases, the gravitational force between them ________. |
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Definition
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| Fricton acts in a direction _______ to an object's direction of motion |
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