H. Physics Chapter 1-3 Test

platform scalereads the normal forceforce of frictionthe force of a surface on an object acting along the surfaceoppositewhich direction of an objects motion does the force of friction act in?meterfundamental unit of length in the metric systemsecondfundamental unit of time in the metric systemamperefundamental unit of electric current in the meteric systemkilogramfundamental unit of mass in the metric systemkelvinfundamental unit of temperature in the metric systemmolefundament unit of amount of substance in the metric systemcandelafundamental unit of luminous intensity in the metric systemmeters per secondderived unit of velocity in the metric systemkg/m^3derived unit of density in the metric systemkgxm/s^2 (newtons)derived unit of force in the metric systemscientific notationa number between 1 and 10 multiplied by a power of 10prefixesan alternative of scientific notationdeca (da)10 (10^1)hecto (h)100 (10^2)kilo (k)1000 (10^3)mega (M)10^6 (1,000,000)giga (G)10^9 (1,000,000,000)tera (T)10^12 (1,000,000,000,000)deci (d)10^-1 (0.1)centi (c)10^-2 (0.01)milli (m)10^-3 (0.001)micro (mu symbol)10^-6 (0.000001)nano (n)10^-9 (0.000000001)pico (p)10^-12 (0.000000000001)linear motionrefers to motion along a straight line; horizontal or verticalpositionwhere an object is locatedreference frames (x-axis, y-axis)position must be measured against what?displacementwhen an object changes in positionspeedhow fast an object is movingequation of speeddistance/timevelocityhow fast and in what direction an object is movingequation of velocitydisplacement/time; change in x/timeequation of accelerationchange in velocity/timechanges its signwhen an object changes direction its velocity...aristotleancient Greek philosopher who classified motionnatural motionstraight up or straight down motion on earth; circular motion beyond earthviolent motionProduced by external pushes or pulls on objectsGalileo Galileiestablished the scientific method, performed experiments while discovering that objects of different weight fall to the ground at the same time in the absence of air resistance, and a moving object needs no force to keep it moving in the absence of frictionisaac newtoncodifies Galileo's discoveries into his famous Laws of motionNewton's first law of motionevery object continues in a state of rest or of uniform speed in a straight line unless acted on by a nonzero net forcevectorquantity whose description requires both magnitude (how much) and direction (which way); can be represented by arrows drawn to scaleaccelerationtells how much an object's speed changes in one secondthe samewhen an object speeds up, its acceleration is in what direction of motion?oppisitewhen an object slows down, its acceleration is in what direction of motion10 m/s of speedwhat do objects in free fall gain or lose every second?motion diagramsuses dots to represent the location of an object at equal time intervalsthe faster the object is movingwhat does it meanwhen the dots are farther apart on a motion diagram?vertical axison a position-time graph, what do u look at to determine how far from the detector an object is located?the steepnesson a position-time graph, to determine how fast an object is moving, what do u look at?it is moving fasterwhat does it mean when the position-time graph is steep?the way the graph is slopedon a position time graph, how do u determine which was the object is moving?it is sloped like a front slashhow do u know if the position-time graph is moving away from the detector?it is sloped like a back slash /how do u know if the position-time graph is moving towards the detector?the vertical axison a velocity-time graph, how do u determine how fast an object is movingwhether the velocity-time graph is above of below the horizontal axison a velocity-time graph, how do u determine which way the object is moving?if it is above the horizontal axishow do u know if a velocity-time graph is moving away from the detector?if it is below the horizontal axishow do u know if a velocity-time graph is moving towards the detector?count squares between the velocity-time graph and the horizontal axishow do u know if how far the object travels on a velocity-time graph?10 m/s^2 downward (-10 m/s^2)what acceleration do objects in free fall experience?