* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Number
Survey
Document related concepts
Modified Newtonian dynamics wikipedia , lookup
Equations of motion wikipedia , lookup
Classical mechanics wikipedia , lookup
Fundamental interaction wikipedia , lookup
Mass versus weight wikipedia , lookup
Fictitious force wikipedia , lookup
Rigid body dynamics wikipedia , lookup
Newton's theorem of revolving orbits wikipedia , lookup
Centrifugal force wikipedia , lookup
Centripetal force wikipedia , lookup
Transcript
Number ______________ NAME ___________________________________________ PHYSICS CHAPTER 5 STUDY GUIDE - Fill in the blanks as you study the chapter. 5.1 NEWTON'S LAWS OF MOTION Forces A force is a (1) or a (2). Because a force is a vector quantity, it has both magnitude and (3). Physicists group all forces into four kinds. They are (4), (5), (6), and (7). The weakest of the four forces is (8). Charged particles cause the (9) force to be exerted. The (10) force is the strongest of the four forces, but only acts over small distances. The (11) force is involved in the radioactive decay of some nuclei. This force has been linked with the (12) force. Newton's First Law of Motion Forces acting on an object can be (13) to produce the net force on the object. If all the forces acting in one direction are (14) all the forces acting on the object in the opposite direction, the net force is zero. According to (15) law, if there is no net force on an object, the object remains at rest, or moves with (16) velocity in a (17) line. Newton's Second Law of Motion If there is a net force on an object, the object will be accelerated, or change (18). The amount of acceleration caused depends on the (19) of the force and the (20) of the object. Newton's second law can be written as an equation, (21). This equation means that acceleration is (22) proportional to force and (23) proportional to mass. The direction of the force and the direction of the acceleration are (24). The Unit of Force The unit of force is defined in terms of Newton's (25) law. The unit of force is the (26), abbreviated as (27). The amount of force that causes a mass of (28) to accelerate at a rate of (29) is equal to one newton. Newton's Third Law of Motion Newton's third law describes pairs of forces called (30) forces. These two forces are (31) in magnitude and (32) in direction. According to this law, if a book pushes downward on a table, the table pushes (33) against (34). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 1