The Principia School Physic teacher: Kathy Foy kathy.foy@principia.edu Algebra 1 teacher: Sheila Hobson sheila.hobson@principia.edu Flying High with Interdisciplinary Learning Using Hands-On STEM Activities Math & Physics Name:__________________________________ Period:_________________________ Test your glider and record the results in the chart below: Compute the average distance traveled and time a lot for your glider. Video tape your one of your trial runs on your phone Make sure you start your glider at the same height each time Use a stop watch on your phone to record the time in seconds V= d/t (m/s) Distance (m) Trial 1 Trial 2 Trial 3 Your glider averages Virtual time aloft:___________ Actual time aloft:____________ VELOCITY EQUATION: v= d t Calculate the velocity of your glider. Show your work below: V = ________________ Remember that the SI unit for velocity is meters per second Velocity is a quantity that describes both speed and direction. Time Aloft (s) Plot your data on the graph and determine if it represents a linear or quadratic function. Explain your reasoning:___________________________________ Label your x & y axis with appropriate units Vertical motion formula for when an object is launch or thrown, the formula to model the height of the object t seconds after it has been launched is h = -4.9t2 + Vot + ho (in meters) Launch angle is 450 H=Final height Vo = Initial velocity(Vi) ho = initial height t = time Calculate the initial velocity of your glider using the vertical motion formula for your glider being launched. VO = _________________________ EQUATION FOR ACCELERATION: Acceleration= final velocity – initial velocity = v time t Don't forget that the SI unit for acceleration is m/s2 Calculate your glider’s average acceleration below: Acceleration:___________________ m/sec Open up your Gliders “Design Specifications” to get your Wing length & Wing Chord” and SNIPE your “Design Specifications” below and delete the example. This is an example (use your own Design Specifications) MASS = Density x Volume Calculate the Mass of your glider’s wing only Remember the Density of balsa wood is 0.41g/cm3 Volume= (length)(width)(height) 10 mm = 1 cm Wing’s length =___________ cm Wing’s width =____________ cm Wing’s height= .0167 cm Wing’s volume=___________cm3 Mass = 0.41 g/cm3 x ________ = __________ grams Now, convert your grams to kilograms (hint: remember 1 gram = .001 kilogram) Mass = ______________ kilograms Weight = Mass x Gravity Calculate the Weight of your wing Weight = Mass x gravity (9.8 m/sec2) Weight = ___________ x __________ = ___________kg ∙ m/sec2 or (N)Newton Remember a newton is the metric unit for force. One newton is the force require to accelerate a mass of one kilogram to one meter per sec per sec. Calculate the lift efficiency of your glider using the Lift Efficiency Ratio LER = Wing Planar Area (WA) Glider Weight (GW) 1. Calculate the LER for a rectangular wing with a span(is the width of the wing and is measured from wing tip to wing tip or perpendicular to the fuselage) of ___________mm and a chord (is the length of the wing measured parallel or along the length of the fuselage) of __________ mm Convert your mm to meters (hint: 1 mm = 0.001 m) Wing Planar Area (WA) = _____________ 1. You can find your glider’s mass on your “Design Specifications” 2. Mass of glider = ___________ grams Convert to kilograms 3. MASS =____________ grams x .001 = _____________ kilograms Weight = mass x gravity Weight of glider = ___________kg x 9.8 m/sec2 Weight of glider = _____________kgm/s2 or Newtons LER: Wing Planar Area (WA) = _________________ Weight of glider (WG) BASIC MATH & PHYSICS REVIEW Momentum Equation EQUATION: Momentum = mass x velocity or p = mv The SI unit for mass is kg. The SI unit for velocity is m/s. The SI unit for momentum is kg x m/s Calculate the momentum of your glider Momentum = mass x velocity (p =mv)_ Momentum = __________ x _________ = __________kg x m/s Force Equation The equation for is force = mass x acceleration or f = ma The standard unit for mass is kg. The standard unit for acceleration is m/s2 The standard unit for force is newton (N) 1N = 1 kg x 1m/s2. Calculate the force Force = _______ x_______ =______ Newtons POTENTIAL & KINETIC ENERGY PE = Potential energy (Energy stored in an object) KE= Kinetic energy ( measurement of an object’s motion) Energy is work. W=F x d The Law of Conservation of Energy states that energy cannot be created or destroyed it can only be transferred. PE= KE KE = 1/2mv2 (Kinetic Energy of the launched glider) EPE =1/2 kx2 (Elastic Potential Energy of the launcher k= constant of the stretched rubber band represents (.25) x= distance rubber band is pulled .35 meters k =Newton/meter Calculate the potential energy transferred from the launcher to the glider using EPE =1/2 kx2 (Elastic Potential Energy of the launcher) Show your work below: EPE = 1/2kx2 EPE = _____________ Measures of Central Tendency: Purpose is to analyze your gliders performance with your classmates. Compare your data with your classmates and calculate the class mean, median, and mode for both distance & time. Define: Mean:_______________________________________ Median:______________________________________ Mode:________________________________________ What is the mean, median, and mode for distances and time aloft for your entire class. Distance Mean Median Mode Time Mean Median Mode