vocabulary
... the Earth; the fundamental force of attraction that all objects with mass have for each other. ...
... the Earth; the fundamental force of attraction that all objects with mass have for each other. ...
Newton`s Second Law
... You are pushing a friend on a sled. You push with a force of 40 newtons. Your friend and the sled together have a mass of 80kg. What is the acceleration of your friend on the sled? ...
... You are pushing a friend on a sled. You push with a force of 40 newtons. Your friend and the sled together have a mass of 80kg. What is the acceleration of your friend on the sled? ...
PHSX 114, Wednesday, September 18, 2002
... Is the moon’s acceleration 9.8 m/s2? • No, it’s 0.0027 m/s2 • g (9.8 m/s2) is 3600 times bigger (602) • Moon’s period is 27.3 days=2.36 x 106 s • Earth-moon distance is 3.84 x 108 m • v=2πr/T=2π(3.84 x 108 m)/(2.36 x 106 s) = 1020 m/s • aR=v2/r=(1020 m/s)2/(3.84 x 108 m) = 0.0027 m/s2 • (3.84 x 108 ...
... Is the moon’s acceleration 9.8 m/s2? • No, it’s 0.0027 m/s2 • g (9.8 m/s2) is 3600 times bigger (602) • Moon’s period is 27.3 days=2.36 x 106 s • Earth-moon distance is 3.84 x 108 m • v=2πr/T=2π(3.84 x 108 m)/(2.36 x 106 s) = 1020 m/s • aR=v2/r=(1020 m/s)2/(3.84 x 108 m) = 0.0027 m/s2 • (3.84 x 108 ...
AP Physics D: Mechanics Midterm Review Problems
... 9. The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The block of mass m1 lies on a rough horizontal surface with a constant coefficient of kinetic friction μ. This block is connected to a spring with spring constant k. The second block ha ...
... 9. The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The block of mass m1 lies on a rough horizontal surface with a constant coefficient of kinetic friction μ. This block is connected to a spring with spring constant k. The second block ha ...
1. Mass, Force and Gravity
... Greater acceleration and mass require more force, which means more gasoline is consumed. So it is more ecological to drive smaller cars and not to accelerate with as much zest. i) If a rock is dropped from a window, it will also accelerate. It will do so at about 9.8 m/s2. Would the acceleration due ...
... Greater acceleration and mass require more force, which means more gasoline is consumed. So it is more ecological to drive smaller cars and not to accelerate with as much zest. i) If a rock is dropped from a window, it will also accelerate. It will do so at about 9.8 m/s2. Would the acceleration due ...
Physics - bsparrow
... • Since action and reaction forces are equal and opposite, why don’t they cancel to zero? – When we have action and reaction systems, they are isolated from other forces. These other forces can cause acceleration! ...
... • Since action and reaction forces are equal and opposite, why don’t they cancel to zero? – When we have action and reaction systems, they are isolated from other forces. These other forces can cause acceleration! ...
Equivalence Principle Acceleration = Gravity Inertial Mass
... • Flat spacetime is equivalent to “zero gravity” = “zero curvature” ...
... • Flat spacetime is equivalent to “zero gravity” = “zero curvature” ...
Force and Motion PhET MAP Only
... applied force to 100N. Predict if the acceleration will increase or decrease. ...
... applied force to 100N. Predict if the acceleration will increase or decrease. ...
ch5-Solving Problems_Force
... where m1 = 10 kg and m2 = 20 kg. A force of 50 N is applied to the 20-kg box. Determine the acceleration of each box & the tension in the string. The coefficient of kinetic friction is 0.10. ...
... where m1 = 10 kg and m2 = 20 kg. A force of 50 N is applied to the 20-kg box. Determine the acceleration of each box & the tension in the string. The coefficient of kinetic friction is 0.10. ...
physics: semester 1 final review
... 7. A toy rocket is launched upward with a speed of 100 m/s. (assume g = 10 m/s/s) (a) after three seconds, what will be the speed of the rocket? (b) what will be the velocity of the rocket at the top of its path? (c) what will be the acceleration of the rocket at the top of its path? (d) Neglecting ...
... 7. A toy rocket is launched upward with a speed of 100 m/s. (assume g = 10 m/s/s) (a) after three seconds, what will be the speed of the rocket? (b) what will be the velocity of the rocket at the top of its path? (c) what will be the acceleration of the rocket at the top of its path? (d) Neglecting ...
Second law of motion
... mass times acceleration due to gravity, or weight = m x (9.8 m/s2 ) 2. Weight and mass are not the same thing. a. Weight changes when the acceleration due to ______________ GRAVITY changes. b. Mass remains the ____________ SAME no matter what weight is. ...
... mass times acceleration due to gravity, or weight = m x (9.8 m/s2 ) 2. Weight and mass are not the same thing. a. Weight changes when the acceleration due to ______________ GRAVITY changes. b. Mass remains the ____________ SAME no matter what weight is. ...
Unit 3.2 Force & Motion
... What is happening in this distance vs time graph? A. Hesoo moves at a constant speed B. Hesoo moves one direction and then speeds up in the opposite direction. C. Hesoo moves in one direction, remains at rest, and then moves in the opposite direction D. Hesoo has no acceleration ...
... What is happening in this distance vs time graph? A. Hesoo moves at a constant speed B. Hesoo moves one direction and then speeds up in the opposite direction. C. Hesoo moves in one direction, remains at rest, and then moves in the opposite direction D. Hesoo has no acceleration ...
The First Two Laws of Motion
... A car is traveling at a speed of 50 km/h and collides head on with something solid Car crumples, slows down, and stops within about 0.1 seconds Anybody not wearing a safety belt will continue to __________________________ Within 0.02 seconds unbelted passengers will _____________________________ ...
... A car is traveling at a speed of 50 km/h and collides head on with something solid Car crumples, slows down, and stops within about 0.1 seconds Anybody not wearing a safety belt will continue to __________________________ Within 0.02 seconds unbelted passengers will _____________________________ ...
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.