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Exam 2 study guide
Exam 2 study guide

chp. 8
chp. 8

... there are unbalanced forces in different directions they will act like a single force on the object. ...
PRENTICE HALL SCIENCE EXPLORER
PRENTICE HALL SCIENCE EXPLORER

...  Explain how a force is described.  Demonstrate how unbalanced and balanced forces relate to an object’s motion. A. What Is Force? 1. A _______________________________ is a push or pull applied to an object. 2. Like velocity and acceleration, a force is described by its ___________________________ ...
Matter in Motion Ch.5
Matter in Motion Ch.5

... a force is applied to an object, the object accelerates in the direction of the applied force. The acceleration is less when the mass of the object is greater.” ...
Newton`s Second Law of Motion
Newton`s Second Law of Motion

Forces Test I
Forces Test I

... 19. A ball is left in the middle of the bed of a truck. If the truck accelerates forward the ball will ___. a) hit the cab of the truck due to Newton’s third law. b) hit the cab of the truck due to Newton’s first law. c) hit the tailgate of the truck due to Newton’s third law. d) hit the tailgate of ...
Forces and Motion Study Guide
Forces and Motion Study Guide

... will increase its momentum when in motion 39. What is Newton’s 3rd Law of Motion? Give an example. For every action there is an equal and opposite reaction, deals with action and reaction forces. Ex: For a bird to fly upwards, it must flap it’s wings in a downward motion (action force). The air unde ...
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... * A astronaut feels weightless in a spaceship which is moving with uniform circular motion about the Planet, say the Earth. ...
Grade 11: Physical Sciences Outline
Grade 11: Physical Sciences Outline

... Describe mass as the amount of matter in a body measured in kilogram (kg). Calculate weight using the expression w = mg. Calculate the weight of an object on other planets with different values of gravitational acceleration. Explain weightlessness as the sensation experienced when all contact forces ...
dimensions
dimensions

... slope. While the ball is moving, the outside force of friction causes it to slow down when it overcomes the force of gravity. When the slope of the roller coaster is steep, the force of friction will not overcome gravity, but as the slope becomes flat, friction begins to overcome gravity. At several ...
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FORCES IN ONE DIMENSION

Forces and Motion Unit Pre Assessment
Forces and Motion Unit Pre Assessment

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Inertia and Newton’s First Law of Motion

PS 5.9 - S2TEM Centers SC
PS 5.9 - S2TEM Centers SC

... acceleration, there must be a force. The force is equal to the mass times the acceleration. (Fw =mag) The force called weight is equal to an object’s mass times the acceleration due to gravity. (9.8m/s2) It is essential for students to Solve problems involving the relationship among the weight and ...
Answer - Plain Local Schools
Answer - Plain Local Schools

...  It’s important to remember that both force and acceleration are ...
the physics of car accidnets
the physics of car accidnets

Forces and Friction Worksheet
Forces and Friction Worksheet

... • Friction is a force caused by two objects rubbing together. Friction acts in the opposite direction of motion. Friction keeps you from slipping when you walk. Friction also makes a car’s brakes work. • The amount of friction depends on two things: how smooth the objects are and how hard they push ...
Background Reading – Mass, Weight, Weightlessness and Newton`s
Background Reading – Mass, Weight, Weightlessness and Newton`s

... and unlike gravitational force, weight will change based on whether there are forces acting that increase or reduce the “upward” force necessary to balance out the “downward” gravitational force; for instance the buoyant force that helps an object float in water, making it weightless. Another exampl ...
Downlaod File
Downlaod File

... c) to any two objects that interact d) only to pairs of objects for which one is much more massive than the other. 3. Newton's Third Law is a) a special case of Newton's Second Law. b) a special case of Newton's First Law. c) independent of Newton's other Laws of Motion. d) applicable only when air ...
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PHYSICS 231 INTRODUCTORY PHYSICS I Lecture 4
PHYSICS 231 INTRODUCTORY PHYSICS I Lecture 4

... • If the net force exerted on an object is zero, its velocity remains constant (both magnitude and direction). • Objects at rest feel no net force • Objects moving with constant velocity feel no net force • No net force means ...
(Force/Mass/Accel) ppt
(Force/Mass/Accel) ppt

... acting on an object, it will move in the direction of the force:  force increases acceleration  mass resists acceleration ...
What is a force?
What is a force?

... or polygon • total clockwise moment = total anticlockwise moment sum of components resolved in any direction is zero • if there are only 3 forces, would intersect at translational a common point • they system is said to be in equilibrium • system in rotational equilibrium is eitherisatsaid restto or ...
Ch. 13 Quiz - westscidept
Ch. 13 Quiz - westscidept

... _____ 4. The type of friction that exists for a shark swimming in the ocean is A) sliding B) hydraulic C) rolling D) fluid _____ 5. The property of matter that resists a change in its motion is A) inertia B) friction C) gravity D) weight _____ 6. According to Newton’s second law of motion, force equ ...
Day 2: What does it take to make an object Move?
Day 2: What does it take to make an object Move?

... In order for any object to be set in motion it needs force. Force: A push or a pull that acts on an object. Objects with more mass are harder to move, which means you must apply more force. $Review Question: What is mass?$ The mass of an object tends to make the object resist being set into motion. ...
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Buoyancy



In science, buoyancy (pronunciation: /ˈbɔɪ.ənᵗsi/ or /ˈbuːjənᵗsi/; also known as upthrust) is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. This pressure difference results in a net upwards force on the object. The magnitude of that force exerted is proportional to that pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the volume of the object, i.e. the displaced fluid.For this reason, an object whose density is greater than that of the fluid in which it is submerged tends to sink. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a ""downward"" direction (that is, a non-inertial reference frame). In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body.The center of buoyancy of an object is the centroid of the displaced volume of fluid.
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