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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. Energy due to motion






2. Speeding up in a positive direction






3. 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.






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






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






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






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






8. Energy due to deformation






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






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






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






12. 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






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






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






15. 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.






16. Measure of inertia; the quantity of matter in an object. Does not change with location.






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






18. Accelerate our bodies






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






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






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






22. Mechanics of objects in accelerated motion.






23. Displacement/time






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






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






26. Rate of motion of an object






27. 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






28. SI units are the most commonly accepted units of measure based on the metric system.






29. Rate of motion in a specific direction






30. The science concerned with the effects of forces acting on objects.






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






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






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






34. Linear motion






35. The rate of doing work






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






37. The capacity to do work






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






39. Location in space in relation to a fix point






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






41. The muscle elongates is an example of negative work






42. Speed and velocity






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






44. 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.






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






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






47. Energy due to position






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






49. 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.






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