Suited for Spacewalking pdf - Virtual Astronaut

to them. Use a metric ruler for measuring the diameterof the dent or hole.Mathematics EquationsElectromagnetImpactorIn phys i c s , the energy of a moving object is ca ll e dkinetic energy. The amount of that energy is re l a t e dto the object's mass and its speed. The equationb e l ow can be used to determine the kinetic energy ofthe falling center punch at the moment of its impacton the test surf a c e .The answer will be in joules (unitof work equal to a force of one newt on exe rted ove ra distance of one meter. In English units, a joule isa p p rox i m a t e ly equal to 0.75 foot pounds).Tower(Two Meters Tall)KE = 1/2 mv 2m = mass of impactorv = velocity at impact6 Volt PowerSupplyTest Surface BlockTo determine the velocity at the impact,use the followingequation:v=gtg = the acceleration of gravity or 9.8m/second 2t = length of time the impactor fellTo determine the length of time the impactor falls,use the following equation:t = √2dg2d = the distance the impactor fell, in metersM e a s u re the distance between the point of the electromagnet and the test materi a l .When the impactorand magnet stop swinging, t u rn off the electric currentto release the impactor. As it fall s , the impactorw i ll accelerate into the sample and make a dent oreven penetrate it. Evaluate the resistance to impactsof various materials by com p a ring the damage don eSample Problemd = 2 mImpactor mass = 50 gramsWhat is KE?v=9.8m/s x 0.64s = 6.3m/sKE = 1/2 x 0.06kg x (6.3m/s) 2 = 1.19 joules5 4 • Suited for Spacewalking An Activity Guide for Technology Education, Mathematics, and Science, EG- 1 9 9 8 - 0 3 - 1 1 2 - H Q