EXAM QUESTIONS AND CORRECT ANSWERS
high velocity, low mass force (example) and effect) -CORRECT ANSWERS player hit with
the ball, bat, puck etc. force is concentrated in a smaller area. causes focal injuries (ex.
contusion).
low velocity, high mass force (example and effect) -CORRECT ANSWERS player falls on the
ground, is checked on the side oft he hockey rink. absorbs forces over a large area. leads to
diffuse injuries (ex. concussion)
injuries can result from -CORRECT ANSWERS illegal play, poor technique, poorly matched
player levels, previously injured area, player's low tolerance to injury, inability to protect an area
without restricting movement, poor quality or maintenance of equipment
low density material -CORRECT ANSWERS light and comfortable to wear. but only
effective at low levels of impact. ex. gauze, foam, neoprene, sorbothane, felt and moleskin SOFT
MATERIAL
high density material -CORRECT ANSWERS firmer, less comfortable, less cushioning. but
absorbs more force through deformation meaning it transfers less stress to the body at higher
levels of impact.
ex. thermoldable plastics (orthoplast, thermoplastic, fiberglass, plaster) HARD MATERIAL
how does equipment reduce potential injury? -CORRECT ANSWERS it can increases the
impact area, disperse it to another part of the body, limit the movement of a certain body part,
add mass to the body part to limit deformation and displacement, reduce friction between
contacting surfaces, absorb energy and resist germs