Unit 3 Powerpoint
... to solve any problem involving onedimensional motion with a constant acceleration You may need to use two of the equations to solve one problem Many times there is more than one way to solve a problem ...
... to solve any problem involving onedimensional motion with a constant acceleration You may need to use two of the equations to solve one problem Many times there is more than one way to solve a problem ...
Ch 8 PowerPoint
... velocity. However, we must not forget Momentum – which is also acting on the object. Momentum = a quantity defined as the product of an object’s mass and its velocity. - In a formula, P = momentum. - momentum moves in the same direction as the velocity ...
... velocity. However, we must not forget Momentum – which is also acting on the object. Momentum = a quantity defined as the product of an object’s mass and its velocity. - In a formula, P = momentum. - momentum moves in the same direction as the velocity ...
Tuesday, May 28
... Why do things have weight? The earth pulls down on them. Why? No one really knows. How does it pull down? The earth is not touching the ball yet it still pulls down. How does the earth pull it down? No one really knows. General relativity explains some aspects of gravity, but the interaction mechan ...
... Why do things have weight? The earth pulls down on them. Why? No one really knows. How does it pull down? The earth is not touching the ball yet it still pulls down. How does the earth pull it down? No one really knows. General relativity explains some aspects of gravity, but the interaction mechan ...
Review - Cobb Learning
... The frictional force which exists between two surfaces is directly proportional to the normal force. That’s why friction on a sloping surface is less than friction on a flat surface. ...
... The frictional force which exists between two surfaces is directly proportional to the normal force. That’s why friction on a sloping surface is less than friction on a flat surface. ...
The Laws of Motion - St. Thomas the Apostle School
... direction, or both. • Only unbalanced forces change the velocity of an object. • Unbalanced forces are acting on an object that is at rest when the object starts moving. • Unbalanced forces change the velocity of a moving object. • Another name for change in velocity over time is acceleration. • Unb ...
... direction, or both. • Only unbalanced forces change the velocity of an object. • Unbalanced forces are acting on an object that is at rest when the object starts moving. • Unbalanced forces change the velocity of a moving object. • Another name for change in velocity over time is acceleration. • Unb ...
The main difference between scalars and
... ● one in horizontal (x) direction with constant velocity vx = ux (no force in x direction no acceleration no change in velocity in that direction) ● one in vertical (y) direction with constant acceleration g downwards (vertical component of velocity changes as in the free fall) ● velocity has th ...
... ● one in horizontal (x) direction with constant velocity vx = ux (no force in x direction no acceleration no change in velocity in that direction) ● one in vertical (y) direction with constant acceleration g downwards (vertical component of velocity changes as in the free fall) ● velocity has th ...
Part IV
... Two boxes are connected by a lightweight (massless!) cord & are resting on a smooth (frictionless!) table. The masses are mA = 10 kg & mB = 12 kg. A horizontal force FP = 40 N is applied to mA. Calculate: a. The acceleration of the boxes. b. The tension in the cord connecting the ...
... Two boxes are connected by a lightweight (massless!) cord & are resting on a smooth (frictionless!) table. The masses are mA = 10 kg & mB = 12 kg. A horizontal force FP = 40 N is applied to mA. Calculate: a. The acceleration of the boxes. b. The tension in the cord connecting the ...
Chapter 7 - Legacy High School
... • Relate Newton’s mathematical analysis of gravitational force to the elliptical planetary orbits proposed by Kepler. • Solve problems involving orbital speed and period. ...
... • Relate Newton’s mathematical analysis of gravitational force to the elliptical planetary orbits proposed by Kepler. • Solve problems involving orbital speed and period. ...
Ch 9 Gravity and Circular Motion
... found by applying a modified version of the equation for g on Earth. The equation can be rewritten to apply to any mass and radius as follows: g = GM/R2 • The following example shows how the equation may be used to find the acceleration of gravity on the surface of the Moon. ...
... found by applying a modified version of the equation for g on Earth. The equation can be rewritten to apply to any mass and radius as follows: g = GM/R2 • The following example shows how the equation may be used to find the acceleration of gravity on the surface of the Moon. ...
Chris Khan 2007 Physics Chapter 6 FF represents the force of
... of the circle. This means that the ball accelerates towards the center of the circle even though speed is constant because acceleration is produced whenever the speed or direction of velocity changes. Here, direction changes constantly. The center-seeking acceleration is known as centripetal acceler ...
... of the circle. This means that the ball accelerates towards the center of the circle even though speed is constant because acceleration is produced whenever the speed or direction of velocity changes. Here, direction changes constantly. The center-seeking acceleration is known as centripetal acceler ...
Modified Newtonian dynamics
In physics, modified Newtonian dynamics (MOND) is a theory that proposes a modification of Newton's laws to account for observed properties of galaxies. Created in 1983 by Israeli physicist Mordehai Milgrom, the theory's original motivation was to explain the fact that the velocities of stars in galaxies were observed to be larger than expected based on Newtonian mechanics. Milgrom noted that this discrepancy could be resolved if the gravitational force experienced by a star in the outer regions of a galaxy was proportional to the square of its centripetal acceleration (as opposed to the centripetal acceleration itself, as in Newton's Second Law), or alternatively if gravitational force came to vary inversely with radius (as opposed to the inverse square of the radius, as in Newton's Law of Gravity). In MOND, violation of Newton's Laws occurs at extremely small accelerations, characteristic of galaxies yet far below anything typically encountered in the Solar System or on Earth.MOND is an example of a class of theories known as modified gravity, and is an alternative to the hypothesis that the dynamics of galaxies are determined by massive, invisible dark matter halos. Since Milgrom's original proposal, MOND has successfully predicted a variety of galactic phenomena that are difficult to understand from a dark matter perspective. However, MOND and its generalisations do not adequately account for observed properties of galaxy clusters, and no satisfactory cosmological model has been constructed from the theory.