 # Newtons First Law Newtons Second Law Newtons Third

• Slides: 51 Newton’s First Law Newton’s Second Law Newton’s Third Law 1 pt 1 pt 2 pt 2 pt 3 pt 3 pt 4 pt 4 pt 5 pt 5 pt Kinematics Measurement The resistance of an object to a change in velocity What is inertia? What a baseball does if you throw it in space What is continue moving in a straight line? Why things thrown on Earth eventually stop What is friction? The quantity which determines an object’s inertia What is the mass? If you swing a ball clockwise on a string, it is the direction the ball goes when released at “ 9 o’clock” What is upwards? It is the cause of an object’s acceleration What is net force? Acceleration is inversely proportional to it What is the mass? The force with which gravity pulls on a 10 kg object What is 100 N? The acceleration of a 50 kg object pulled with 10 N What is. 5 m/s/s? The time during which a net force acting on an object whose graph is: What is during the first second? If the action force is you pulling on a rope, this is the reaction force What is the rope pulling on you? The amount of force with which a scale pushes up on my feet (if I am still) What is my weight? It pushes on airplanes to make them go What is air? If an action force is Object A pushing Object B, then the reaction force acts on what object What is object A? The force of a strongman pulling on you plus the force of you pulling on the strongman What is 0 N? Velocity equals (final position initial position) divided by this What is the change in time? If I move East with a velocity of 10 m/s, a velocity of -5 m/s represents movement in this direction What is West? It is defined as a change in velocity divided by a change in time What is acceleration? The equation 2 d=1/2 at , solved for acceleration What is 2 a=2 d/t ? The accelerations shown below: What is 2 -1 m/s , 2 then 0 m/s ? It is the standard (SI) unit of force What is the Newton (N)? The difference between your measurement and the true value What is error? To reduce error, scientists often take multiple measurements and then do this What is take an average? To get the percent error, you divide the error by the true value, then multiply by this number What is 100? If your measurements are consistently wrong in one direction, it might be due to this type of error What is “Systematic error”?