Quiz 2 study guide with quiz questions and review
Quiz 2 study guide with quiz questions and review KIN3309
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This 10 page Study Guide was uploaded by Liya Oommen on Tuesday April 7, 2015. The Study Guide belongs to KIN3309 at a university taught by Dr. Beom Chan Lee in Fall. Since its upload, it has received 1563 views.
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Date Created: 04/07/15
1Which of the following is an example of linear motion IA child performing a cartwheel on a specific axis IA runner s leg motion during a 100 m race INone of the above 2 Which of the following is an example of angular motion IThe arm of the pitcher throwing a ball IA parachutist in free fall IThe path of a baseball while it is in the air INone of the above 3 Frontal Sagittal Transverse 4 The transverse bisect the body into I Right and left portions I Front and back 5 The hip joint is to the knee joint I Medial I Distal I Anterior 6 A Triaxial joint has how many degrees of freedom I 1 i I More than 3 7 Stress is I The force per unit area 8 Which is not part of a strain curve I Nylon region 9 These cells are responsible for forming new bone I Osteoblasts 10 Building new bone at the same site that old bone Is being removed from is called I Remodeling 11 A standing person has forces on the inferior portion and forces on the superior portion of the femoral neck I Compressive tensile 12 A arthrodial joint is known as a joint I Synovial 13The ability to respond to stimulation is called Contractiity Extensibility Elasticity The stretch shortening cycle consists of in the same muscle An eccentric contraction followed by a concentric contraction As a person stands from a sitting position what is the predominant contraction type I n the lower extremities Concentric the quads 16 if you are sitting down after standing up it is eccentric gthe endomysium covers the muscle bers 18 a functional unit of skeletal muscle is a sarcomere 19 actinmyosin cross bridge forms when calcium ions cause active sites to be exposed 20 muscles with lots of sarcomeres in parallel can achieve high force 21 a motor unit one neuron and all of the muscle bers it connects to 22 an exercise is considered as an when the segment moves a speci ed weight through a range of motion isotonic 23 which scenario describes an eccentric contraction The knee is exing as the knee extensor muscle group 24 Sensory neurons Send signals to the muscle motor 25 Muscle spindles Are stimulated by extradural muscle contractions 26 Two ways of controlling the amount of tension in a muscle are 27 The all or nothing principle refers to A muscle A muscle ber A muscle fascicle 28 A exor re ex Results from a quick stretch to the muscle Results from high tension in a muscle 29 EMG can give Information about the level of force output of the muscle Information about the velocity of stretch of the muscle 30 When a motor unit fatigues The EMG aplitude decreases and force increases The EMG aplitude remains the same the force 31 THE GTO is sensitive to Muscle length Movement Joint position 32 Which muscle is not a rotator cuff muscle Teres minor Supraspinatus lnfraspinatus Subscapularis 33 Which is not a scapular motion Downward rotation Depression Retraction 34 The Scapulothoracic joint is a Ball and socket joint Saddle joint Pivot joint 35 The motion that takes place at the radioulnar joint is Flexion AbducUon Adduction 36 The greatest strength output in the shoulder is generated in Extension Flexion AbducUon 37 Ulnar exion takes place at the joint Radioulnar Ulnohumeral Midcarpal 38 THE KNEE jOlNT IS CONSIDERE TO BE A Modi ed hinge joint Condyloid joint Double condyloid joint 39 Which direction does the knee typically have the least range of motion Flexion Internalexternal rotation Abduction adduction 40 The knee can ex through a greater range of motion when the The foot is pronating Thigh is hyperextended Foot is supinating Both a and b 41 Muscular stability of the spine is provided by Multi dus Rectus abdominis Erector spinae All of the above 42 Contracted at the same time the erector spinae muscles create but if contracted unilaterally the create Either a or b 43 Disk protrusions are most common in which region Cervical Thoracic Sacral 44 An aging spine does not result in Decreased spinal exibility Less lumbar lordosis and increased thoracic kyphosis Increased lateral bending 1 Which parameter is defined as the total distance in position a Displacement c Velocity d Acceleration 2 A swimmer completes 10 laps in a 50m swimming pool finishing Where she started What were the linear distance and the linear displacement a Distance 500 m displacement 500 c Distance 0 displacement 0 d Distance 0 displacement 500 A sprinter is observed to run 50 meters in 75 seconds Calculate the speed of a sprinter in msec i VDT 1 5075 An individual runs 20 km in 89 minutes What is the average speed in meters per second 20km89 min 023 kmminl 023 100060 375 ms i 027 ii 090 iv 225 During running 100m a runner runs from the 20 to 30 mark in 60 frames of a video record If the video camera recorded data at 50 fps how fast was she during this interval vSf Si At I t 605012s I V 10m12 s 83 ms i 65 m2s ii 36 ms iv 0167 ms A sprinter moving in a straight line at constant velocity at a position of 10 meters ad finishes at 30 meters in five seconds What is the velocity of the car in meters per second XfXiVfol 30105Vx Vx 4 ii 6 iii 8 iv 2 During the end of a 100m race a runner s acceleration is negative Which statement accurately interprets this observation b The runner is speeding up While moving in the negative direction c The slop of a velocity versus time plot is positive i Fix Velocity versus time plot is either negative or constant d The runner is slowing down While moving in the negative direction A bobsled accelerates from rest at a constant rate of 3 msz How fast is it going after 35 seconds Vf Vi AXTfl 3ms2 X 35 s a 65 ms b 7 ms c 9 ms A triple runner needs a velocity of 92 ms to make a good jump If he is accelerating at 165 msz how much time does he need to reach the velocity a 458 s b 571 s c 35 s 10 A Soccer ball is rolling With a constant acceleration a of 05 ms2 At ti 0 s the ball has an instantaneous velocity of 6 ms Vi After 3 s ti of rolling What would be the velocity of the ball a 75 05 55 06 11 A vaulter is trying to reach a velocity of 7 ms at the end of 14 m nway How quickly must he accelerate 050 msZ 1 C 200 m52 350 m 52 1 Equation 4 9059 12 A childs vertical takeoff velocity when jumping on a trampoline is 53 ms Assuming takeoff and landing heights are the same how long is the child airborne 1 Equation 1 0 531 981 Tf TtotTf 2 13 A shotputter throws the shot with a horizontal velocity of 10 ms and a vertical velocity of 10 ms from a height of 20 m Calculate the range of the throw a 222 b X equation 14An absolute angle is measured from a The absolute value of a joint angle b The difference between two angles lrelative angle d Always positive 15A relative angle is a The absolute value ofa joint c And angle that is 16Given the stick gure which angle classi es as a distal end absolute angle QUIZ b A is the proximal 17Given the stick gure which angle classi es as a distal end relative angle b Every other angle is absolute 18Given the stick gure which angle classi es as a distal end joint angle 19The following coordinates were digitized from the right lower extremity of a person walking a Calculate the segnment angle of the thigh and leg b PICTURE ON CAMERA c Flexion 20Angular displacement is b The length of the angular path taken along a path c The rate of change in angular position d The scalar 21lf angular velocity is decreasing angular acceleration must be b In the opposite direction as the velocity c Constant d Changing 22Angular acceleration b The rate of change of angular displacement c The rate of change of angular distance d The rate of change of angular position 23Which is true of a cyclist s pedals a The angular velocity is zero if his angular acceleration is zero b The angular displacement is always equal to the angular distance traveled d Centripetal acceleration always points away from the aXis of rotation 24A hockey stick 11 m long completes a swing in 015 seconds through a range of 85 degrees Assume a uniform angular velocity a What is the average angular velocity of the stick i 85O15 567 b What is the linear distance moved by the end of the stick i 11 850 935 ii 935 m 11180 16 m c What is the tangential velocity of the end of the stick i 109 ms 1 What is the tangential acceleration of the end of the stick i 14514 ms2 25Newtons 1st law focuses on a Action reaction b Acceleration d Gravitiy 26When a sprinter uses starting blocks to enhance running performance which of newtons laws is best reperesented by the interaction of the sprint and the blocks b Acceleration c Inertia d Gravity e Ampli cation 27As the mass of an object increase what happens to its inertia a It decreases c It stays the same d It weighs more e Mass and inertia are not related 28lf a body of constant mass is traveling with a constant velocity a There must be no force acting on the body c There must be force acting on the body d There must be a net force acting on the body 29lf a net horizontal force is applied to a body that is at rest the body will a Stay at rest b Stay at rest until the net force is removed n d Accelerate when the net force is removed 30An unbelted victim ina car accident will continue to moce in the same direction and with the same speed until the dashboard causes a change in motion This best exempli es a Newtons rst law of motion b Newtons second law of motion c Newton39s third law of motion d The law of force 31A 60 kg dancer applies a horizontal force of 180 N on the dance oor The dancers acceleration will be a 03 msZ b 03 msZ c 30 msZ 32Units of momentum could be a N b Joules c Nms 33lf an athlete moves faster what happens to her momentum 34 b It decreases c Velocity has no impact on momentum d Her momentum equal zero e It converts to impulse An describes the tendency of solid materials to return to their original shape after being deformed a Joint reaction force b Inertial force c Muscle force 35 Vectors have magnitude and direction De nition of position distance displacement Displacement is a vector change in position in linear and angular kinematics Position and distance are scaar Veocitychange in displacement and acceerationchange in velocity de nition Vertical and horizontal vectors when 2 dimensional vector is given De nition of absolute ange measure from external reference frame Relative ange measuring using two adjacent body segments Computing absolute ange when joint position is given slide 37 Relationship between angular velocity and angular acceleration o In AV decreases AA also decreases Slide 48 joint anglesD anatomical position Hip and knee joint angle cacuation slide 40 o No graphs on the quiz Slide 41 angular velocity and right hand rule and angular displacementchange in position 4 computational problems 0 Single step problems Relationship between angular and linear position 0 The equation Slide 43 know the equation o If angular velocity is given and time nd the angular acceeration angular velocitytime o If tangential velocity and radius is given nd angular velocity Tangential acceleration Centripetal 0 Know the de nition Angular positon distance and speed is scalar Acceleration is vector Important aspects of kinetic analysis 0 Forces 0 Force causes motion De nition of newton39s law and relate them to examples 0 Inertia o Acceleration 0 Action and reaction sprinkler system If mass of object increases inertia increases 0 Inertia mass in motion Greater massD inertia increases Def of net force 0 Over all force acting on the system body or object Units for angular displacement work force inertia any energy 0 Unit for mass and acceleration to nd unit for force Kgm2 Relationship between momentum and velocity 0 Different forces slide 3D de nition AppIy force greater than friction force to move an object Impulse change in linear momentum Slide 9 height of center of mass during squat jumping Slide 19 o If you increase velocity two times you will have 4 times greater velocity Bonus questions 46 questions Straight forward problem solving 810
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