Unit 4 Notetakers
... The net work done on an object by the force or forces acting on it is equal to the change in the kinetic energy of the object. o The speed of an object will ___________ if the net work done on it is _____________. o The speed of an object will ___________ if the net work done on it is _____________. ...
... The net work done on an object by the force or forces acting on it is equal to the change in the kinetic energy of the object. o The speed of an object will ___________ if the net work done on it is _____________. o The speed of an object will ___________ if the net work done on it is _____________. ...
Lab 6: Work-Energy Theorem
... work done on the bob from point A is able to swing completely around in a circle at point C. Hint: W AB increases the ∆K while W BC decreases ∆K. Using the centripetal acceleration from N2L, predict the minimum velocity vthy required for the bob to just swing completely around in a circle. In othe ...
... work done on the bob from point A is able to swing completely around in a circle at point C. Hint: W AB increases the ∆K while W BC decreases ∆K. Using the centripetal acceleration from N2L, predict the minimum velocity vthy required for the bob to just swing completely around in a circle. In othe ...
1 - alcdsb
... a. 3.0 m/s2 [W] b. 48 m [W] c. 16 m/s [W] d. 31 m/s [W] e. 260 m [W] f. 360 m [W] The town of Vector is 42.0 km [W] of the city of Scalar. There is a highway that connects the two places. A truck leaves the town of Vector and heads for Scalar. The truck travels at a constant speed of 75.0 km/h. At e ...
... a. 3.0 m/s2 [W] b. 48 m [W] c. 16 m/s [W] d. 31 m/s [W] e. 260 m [W] f. 360 m [W] The town of Vector is 42.0 km [W] of the city of Scalar. There is a highway that connects the two places. A truck leaves the town of Vector and heads for Scalar. The truck travels at a constant speed of 75.0 km/h. At e ...
1) Velocity is a vector quantity that has both magnitude and direction
... 106) 1 universal mass unit (1 u) is equal to 9.31 E 2 MeV. Convert u to MeV 107) When a particle is annihilated ALL of its mass is converted into ...
... 106) 1 universal mass unit (1 u) is equal to 9.31 E 2 MeV. Convert u to MeV 107) When a particle is annihilated ALL of its mass is converted into ...
1 - PLK Vicwood KT Chong Sixth Form College
... accelerate vertically. (ii) When the fuel in a rocket burns, a stream of gas is produced and then escapes at high velocity through the exhaust nozzle. The exhaust gases are pushed backwards by the rocket. Therefore a reaction acts on the rocket in the opposite (upward) direction and it is this force ...
... accelerate vertically. (ii) When the fuel in a rocket burns, a stream of gas is produced and then escapes at high velocity through the exhaust nozzle. The exhaust gases are pushed backwards by the rocket. Therefore a reaction acts on the rocket in the opposite (upward) direction and it is this force ...
Solution key to exam 1 - University of Rochester
... ____ Charles Coulomb discovered the fundamental nature of light in terms of electric and magnetic fields. ____ For any two people, time flows at exactly the same rate. ____ Albert Einstein invented Newton’s Laws. ____ The New York Yankees baseball players are heavily overpaid. ____ An object can be ...
... ____ Charles Coulomb discovered the fundamental nature of light in terms of electric and magnetic fields. ____ For any two people, time flows at exactly the same rate. ____ Albert Einstein invented Newton’s Laws. ____ The New York Yankees baseball players are heavily overpaid. ____ An object can be ...
8th Grade Student Test - Force and Motion
... a. When the plane flies through the point from which it started, the distance the plane has traveled is zero. b. When the plane flies through the point from which it started, the change in position for the plane is twice the distance traveled. c. The distance traveled by the plane can be a positive ...
... a. When the plane flies through the point from which it started, the distance the plane has traveled is zero. b. When the plane flies through the point from which it started, the change in position for the plane is twice the distance traveled. c. The distance traveled by the plane can be a positive ...
Mass versus weight
In everyday usage, the mass of an object is often referred to as its weight though these are in fact different concepts and quantities. In scientific contexts, mass refers loosely to the amount of ""matter"" in an object (though ""matter"" may be difficult to define), whereas weight refers to the force experienced by an object due to gravity. In other words, an object with a mass of 1.0 kilogram will weigh approximately 9.81 newtons (newton is the unit of force, while kilogram is the unit of mass) on the surface of the Earth (its mass multiplied by the gravitational field strength). Its weight will be less on Mars (where gravity is weaker), more on Saturn, and negligible in space when far from any significant source of gravity, but it will always have the same mass.Objects on the surface of the Earth have weight, although sometimes this weight is difficult to measure. An example is a small object floating in a pool of water (or even on a dish of water), which does not appear to have weight since it is buoyed by the water; but it is found to have its usual weight when it is added to water in a container which is entirely supported by and weighed on a scale. Thus, the ""weightless object"" floating in water actually transfers its weight to the bottom of the container (where the pressure increases). Similarly, a balloon has mass but may appear to have no weight or even negative weight, due to buoyancy in air. However the weight of the balloon and the gas inside it has merely been transferred to a large area of the Earth's surface, making the weight difficult to measure. The weight of a flying airplane is similarly distributed to the ground, but does not disappear. If the airplane is in level flight, the same weight-force is distributed to the surface of the Earth as when the plane was on the runway, but spread over a larger area.A better scientific definition of mass is its description as being composed of inertia, which basically is the resistance of an object being accelerated when acted on by an external force. Gravitational ""weight"" is the force created when a mass is acted upon by a gravitational field and the object is not allowed to free-fall, but is supported or retarded by a mechanical force, such as the surface of a planet. Such a force constitutes weight. This force can be added to by any other kind of force.For example, in the photograph, the girl's weight, subtracted from the tension in the chain (respectively the support force of the seat), yields the necessary centripetal force to keep her swinging in an arc. If one stands behind her at the bottom of her arc and abruptly stops her, the impetus (""bump"" or stopping-force) one experiences is due to acting against her inertia, and would be the same even if gravity were suddenly switched off.While the weight of an object varies in proportion to the strength of the gravitational field, its mass is constant (ignoring relativistic effects) as long as no energy or matter is added to the object. Accordingly, for an astronaut on a spacewalk in orbit (a free-fall), no effort is required to hold a communications satellite in front of him; it is ""weightless"". However, since objects in orbit retain their mass and inertia, an astronaut must exert ten times as much force to accelerate a 10‑ton satellite at the same rate as one with a mass of only 1 ton.On Earth, a swing set can demonstrate this relationship between force, mass, and acceleration. If one were to stand behind a large adult sitting stationary on a swing and give him a strong push, the adult would temporarily accelerate to a quite low speed, and then swing only a short distance before beginning to swing in the opposite direction. Applying the same impetus to a small child would produce a much greater speed.