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Mechanical Principles Of Human Movement

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Act perpendicular to the surface in contact and move the objects in opposite ways i.e. the downward force from a runners foot strike moves runner up away from the earth.






2. Energy due to position






3. Change in position that occurs when all points on a body or object move in circular paths about the same fixed axis - also referred to as rotary motion or rotation.






4. The property of an object to resist changes in its motion.






5. Is a mathematical representation of anything that is defined by its size or magnitude (a number) and its direction (its orientation).






6. The change of motion of an object is proportional to the force impressed; and is made in the direction of the straight line in which the force is impressed






7. In reference to height - the greater the height the more gravitational potential energy






8. Duration of an event - SI unit if seconds - minutes - hours and days all based on s.






9. Are forces that occur between objects in contact with each other i.e. air and water.






10. Done by a force acting on an object when the object is displaced in the direction opposite the force acting on it






11. Done by a force acting on an object if the object is displaced in the same direction as the force






12. The objects stay together and move with the same velocity after impact (full back and linebacker)






13. Speed and velocity






14. Displacement/time






15. The capacity to do work






16. Linear motion that occurs when an object maintains its orientation during a movement so that all points on the object move the same distance - in the same direction - in the same time but not in straight lines.






17. Accelerate our bodies






18. A change in position that results from a combination of both linear and angular motion. Most movement is general is nature






19. Distance traveled/time






20. Occurs when an object moves in a positive direction but is slowing down






21. Location in space in relation to a fix point






22. Mechanics of objects in accelerated motion.






23. Forces that act within the object or system whose motion is being investigated.






24. A push or a pull. They cause objects to start - stop - speed up - slow down or change direction. (N)






25. Are forces that act on an object as a result of interaction with the environment surrounding it. Either non - contact or contact forces.






26. Mechanics of objects at rest of moving at a constant velocity.






27. Speeding up in a positive direction






28. When an object speeds up - slows down - starts - stops or changes direction. Can be positive or negative






29. The muscle elongates is an example of negative work






30. Rate of motion in a specific direction






31. All of the momentum of one object is transferred to the other (two pennies example)






32. The branch of dynamics concerned with the forces that cause or tend to cause motion (external forces - Newton's laws).






33. Used to describe a change in position - the SI unit is meters - may also see miles - yards - feet and inches.






34. Linear motion that occurs when a object maintains its orientation during a movement so that all points on the object move the same distance - in the same direction - in the same time - in strain lines






35. The branch of dynamics concerned with the description of motion (linear - angular and general motion).






36. The product of force and the amount of displacement in the direction of that force






37. Defined as the absolute value of the ratio of the velocity of separation of velocity of approach






38. The means by which energy is transferred from one object or system to another






39. The distance traveled in a straight line from the starting point to the ending point






40. The action or process of change in position - in which two things are necessary.






41. The study of forces and their effects on living systems.






42. Rate of motion of an object






43. Everybody continues in a state of rest or of uniform motion in a straight line - unless it is compelled to change that state by forces impressed upon it






44. Linear motion






45. To every action there is always opposed an equal reaction






46. The shortening phase of the muscle in an isotonic lift is an example of positive work






47. Measure of the force of gravity acting on an object. Changes with location.






48. A measure of the length of a path followed by an object






49. Linear motion






50. Act parallel to the contacts and opposes motion or sliding between the surfaces i.e. the backward of the runners foot strike gives the runner horizontal motion.