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Which variable is the independent variable on the graph? Time http://o.quizlet.com/i/z-Kq0CPF881moL-U_CJG6g.jpg What is the position of the object at t = 0 sec? 10m Where is the object after 12s? 70m Choose the line B that has a greater constant speed than the object shown and travels for 12 seconds. dashed line ----- Choose the line C that shows an object at rest at 30m for 12 seconds. dotted line ●●●●● Draw line D that shows an object with a constant BACKWARDS speed for 12 seconds. dot dashed line ●-●-●- Is the rate of change in distance per unit of time Speed Is the rate of change in speed (velocity) per unit of time acceleration Is a change that occurs over time Rate Is a unit of distance meter Is a unit of speed meters/sec Is a unit of acceleration meters/sec2 Is the unit of force Newton Is a unit of time seconds Rate in thermal systems is the movement of heat Three ways to transfer heat are conduction, convection, radiation convection is used in heating and cooling systems. Forced convection produces convection currents or winds. Natural A material that transfers heat easily is a/an conductor A material that does not transfer heat easily is a/an insulator All objects radiate energy in the form of electromagnetic radiation