TT work and machines notes with answers 12
... Carrying stuff = NO WORK! o You don’t do any work when you carry an object because you exert an upward force to hold the object so that it doesn’t fall due to gravity pulling down on the object. The motion of you walking is a forward direction. Since the force is up and down and the direction of mov ...
... Carrying stuff = NO WORK! o You don’t do any work when you carry an object because you exert an upward force to hold the object so that it doesn’t fall due to gravity pulling down on the object. The motion of you walking is a forward direction. Since the force is up and down and the direction of mov ...
Newton`s 2nd Law
... Feather falls slowly due to air resistance force. If we remove the air (create a vacuum) then feather and coin fall with same acceleration. ...
... Feather falls slowly due to air resistance force. If we remove the air (create a vacuum) then feather and coin fall with same acceleration. ...
Forces - QuarkPhysics.ca
... my hand just go through the book? electron clouds - both negative - repel each other. Anything to do with molecules, pressure, states of matter, etc. is ElectroMagnetic Force. ...
... my hand just go through the book? electron clouds - both negative - repel each other. Anything to do with molecules, pressure, states of matter, etc. is ElectroMagnetic Force. ...
Newton`s Second Law of Motion
... the same car moving at the same speed but this time hitting a giant haystack and coming to rest. The force on the car is much smaller now (little F ), but it acts for a much longer time (big t ). In each case the impulse involved is the same since the change in momentum of the car is the same. Any n ...
... the same car moving at the same speed but this time hitting a giant haystack and coming to rest. The force on the car is much smaller now (little F ), but it acts for a much longer time (big t ). In each case the impulse involved is the same since the change in momentum of the car is the same. Any n ...
Harlow Slides in PPTX - University of Toronto Physics
... Often motion of the object as a whole is not influenced by details of the object’s size and shape We only need to keep track of a single point on the object So we can treat the object as if all its mass were concentrated into a single point A mass at a single point in space is called a parti ...
... Often motion of the object as a whole is not influenced by details of the object’s size and shape We only need to keep track of a single point on the object So we can treat the object as if all its mass were concentrated into a single point A mass at a single point in space is called a parti ...
File - Malone Science . com
... A falling ball exerts a downward force on the ground, and the ground exerts an equal but upward force on the ball. The push of the ground causes the ball to bounce upward. Newton's third law of motion is sometimes called the law of action and reaction. For every action, there is an equal and opposit ...
... A falling ball exerts a downward force on the ground, and the ground exerts an equal but upward force on the ball. The push of the ground causes the ball to bounce upward. Newton's third law of motion is sometimes called the law of action and reaction. For every action, there is an equal and opposit ...
Chapter 4 Forces and Newton’s Laws of Motion continued
... Newton’s laws of force and motion 1. An object continues in a state of rest or in a state of motion at a constant speed along a straight line, unless compelled to change that state by a net force. (One object) 2. When a net external force acts on an object of mass m, the acceleration that results is ...
... Newton’s laws of force and motion 1. An object continues in a state of rest or in a state of motion at a constant speed along a straight line, unless compelled to change that state by a net force. (One object) 2. When a net external force acts on an object of mass m, the acceleration that results is ...
Chapter 3 - Department Of Computer Science
... G is the universal gravitational constant G = 6.67 x 10-11 N·m2/kg2 Why objects fall to the ground of the Earth, ...
... G is the universal gravitational constant G = 6.67 x 10-11 N·m2/kg2 Why objects fall to the ground of the Earth, ...
Modified True/False
... 3. Friction always acts against an object’s motion relative to the contact surface. _________________________ 4. Free body diagrams include all the forces acting on the object, not just those directly responsible for the object’s motion. ______________________________ 5. When forces acting on an obj ...
... 3. Friction always acts against an object’s motion relative to the contact surface. _________________________ 4. Free body diagrams include all the forces acting on the object, not just those directly responsible for the object’s motion. ______________________________ 5. When forces acting on an obj ...
Gravity Notes 2
... If you were an astronaut and you go farther into space, why do you become weightless? Because the distance between you and the earth increases the force of gravity between you and the earth decreases. An object with more mass is pulled by gravity with greater force, so mass and weight are closely re ...
... If you were an astronaut and you go farther into space, why do you become weightless? Because the distance between you and the earth increases the force of gravity between you and the earth decreases. An object with more mass is pulled by gravity with greater force, so mass and weight are closely re ...
Acceleration Characteristics for Circular Motion
... same speed and in the same direction unless acted upon by an unbalanced force. In what path do objects naturally travel? Straight lines. What is required for objects to move in circles? An unbalanced force. Newton's second law of motion says that… if acceleration is present then net force is present ...
... same speed and in the same direction unless acted upon by an unbalanced force. In what path do objects naturally travel? Straight lines. What is required for objects to move in circles? An unbalanced force. Newton's second law of motion says that… if acceleration is present then net force is present ...
Chapter 8 Accelerated Circular Motion continued
... Example: The Effect of Speed on Centripetal Force The model airplane has a mass of 0.90 kg and moves at constant speed on a circle that is parallel to the ground. The path of the airplane and the guideline lie in the same horizontal plane because the weight of the plane is balanced by the lift gener ...
... Example: The Effect of Speed on Centripetal Force The model airplane has a mass of 0.90 kg and moves at constant speed on a circle that is parallel to the ground. The path of the airplane and the guideline lie in the same horizontal plane because the weight of the plane is balanced by the lift gener ...
P2.3 Forces
... table? 8. What law states extension of the material is proportional to the force applied? [1] ...
... table? 8. What law states extension of the material is proportional to the force applied? [1] ...
Test #4 - Wando High School
... 6) A sign is hung using two ropes attached to the top center of the sign. The angle between the ropes is 24.00. If there is 34 Newtons of tensional force on each rope, what is the mass of the sign? ...
... 6) A sign is hung using two ropes attached to the top center of the sign. The angle between the ropes is 24.00. If there is 34 Newtons of tensional force on each rope, what is the mass of the sign? ...
PHYSICS 149: Lecture 3 - Purdue Physics
... in motion unless acted upon by an unbalanced force (law of Inertia) An unbalanced force is equal to the rate of change of momentum ( F = ma ) ...
... in motion unless acted upon by an unbalanced force (law of Inertia) An unbalanced force is equal to the rate of change of momentum ( F = ma ) ...
Newton`s Laws of Motion - Brookville Local Schools
... Think about it . . . What happens if you are standing on a skateboard or a slippery floor and push against a wall? You slide in the opposite direction (away from the wall), because you pushed on the wall but the wall pushed back on you with equal and opposite force. Why does it hurt so much when yo ...
... Think about it . . . What happens if you are standing on a skateboard or a slippery floor and push against a wall? You slide in the opposite direction (away from the wall), because you pushed on the wall but the wall pushed back on you with equal and opposite force. Why does it hurt so much when yo ...
Newton`s 2nd Law
... But disturb the contact surfaces by pushing horizontally on the crate and friction is produced. How much? If the crate is still at rest, then the friction that opposes motion is just enough to cancel your push. If you push horizontally with, say, 70 newtons, the friction becomes 70 newtons. If you p ...
... But disturb the contact surfaces by pushing horizontally on the crate and friction is produced. How much? If the crate is still at rest, then the friction that opposes motion is just enough to cancel your push. If you push horizontally with, say, 70 newtons, the friction becomes 70 newtons. If you p ...
Chapter 4 Forces and Newton’s Laws of Motion continued
... Newton’s laws of force and motion 1. An object continues in a state of rest or in a state of motion at a constant speed along a straight line, unless compelled to change that state by a net force. (One object) 2. When a net external force acts on an object of mass m, the acceleration that results is ...
... Newton’s laws of force and motion 1. An object continues in a state of rest or in a state of motion at a constant speed along a straight line, unless compelled to change that state by a net force. (One object) 2. When a net external force acts on an object of mass m, the acceleration that results is ...
Newton`s 3rd Law
... A fish pushes the water backward with its fins, and the water pushes the fish forward. The wind pushes against the branches of a tree, and the branches push back on the wind and we have whistling sounds. Forces are interactions between different things. Every contact requires at least a two-ness; th ...
... A fish pushes the water backward with its fins, and the water pushes the fish forward. The wind pushes against the branches of a tree, and the branches push back on the wind and we have whistling sounds. Forces are interactions between different things. Every contact requires at least a two-ness; th ...
Name - Mrs. Henderson`s Science Site
... 13. What is the value for the acceleration due to gravity? 14. What is the difference between scalar and vector? 15. Name 3 examples of scalar quantities. Name 3 examples of vector quantities. 16. What is the average speed of a cat that runs 3 m in 1.5 seconds? 17. If a car travels 5 m/s in the 1st ...
... 13. What is the value for the acceleration due to gravity? 14. What is the difference between scalar and vector? 15. Name 3 examples of scalar quantities. Name 3 examples of vector quantities. 16. What is the average speed of a cat that runs 3 m in 1.5 seconds? 17. If a car travels 5 m/s in the 1st ...
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.