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Test your basic knowledge |
Mechanical Principles Of Human Movement
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Study First
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. A change in position that results from a combination of both linear and angular motion. Most movement is general is nature
General motion
Angular motion
Kinetics
Non - contact forces
2. Rate of motion in a specific direction
Occurs when all points on a body or object move the same distance - in the same direction at the same time
Law of Inertia
Velocity
Eccentric phase
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.
Angular motion
Two types of linear motion
Normal contact forces
Law of Inertia
4. The capacity to do work
Average speed
Vector
Mechanics
Energy
5. The objects stay together and move with the same velocity after impact (full back and linebacker)
Inelastic collisions
Impulse
Forces
Position
6. 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.
Curvilinear translation
International System of Units
Average velocity
Acceleration
7. Linear motion
Vector
Energy
Kinetics
Occurs when all points on a body or object move the same distance - in the same direction at the same time
8. Is a mathematical representation of anything that is defined by its size or magnitude (a number) and its direction (its orientation).
Law of Inertia
Acceleration
Negative work
Vector
9. SI units are the most commonly accepted units of measure based on the metric system.
Inelastic collisions
Acceleration
International System of Units
External forces
10. 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
Motion
Law of acceleration
Kinetics
Kinetics
11. Location in space in relation to a fix point
Acceleration
Work
Position
Non - contact forces
12. Occurs when an object moves in a positive direction but is slowing down
Average speed
Negative acceleration
Curvilinear translation
Law of Inertia
13. Done by a force acting on an object if the object is displaced in the same direction as the force
Biomechanics
Positive work
Law of acceleration
Weight
14. The action or process of change in position - in which two things are necessary.
Static
Negative work
Motion
Mechanics
15. The branch of dynamics concerned with the forces that cause or tend to cause motion
Work
Weight
Kinetics
Vector
16. Measure of inertia; the quantity of matter in an object. Does not change with location.
Mass
Kinematics
Law of action - reaction
General motion
17. Duration of an event - SI unit if seconds - minutes - hours and days all based on s.
Internal forces
Time
Speed
Work
18. The muscle elongates is an example of negative work
Friction forces
Eccentric phase
Time
External forces
19. The shortening phase of the muscle in an isotonic lift is an example of positive work
Work
Inertia
Concentric contraction
Energy
20. The product of forece multiplied by the time that force acts
Negative acceleration
Law of Inertia
Impulse
Vector
21. To every action there is always opposed an equal reaction
Major components in many sports
Inelastic collisions
Biomechanics
Law of action - reaction
22. Energy due to motion
Law of Inertia
Rectilinear translation
Kinetic energy
Dynamic
23. When an object speeds up - slows down - starts - stops or changes direction. Can be positive or negative
Acceleration
Friction forces
Work
Energy
24. Done by a force acting on an object when the object is displaced in the direction opposite the force acting on it
Positive acceleration
Time
Forces
Negative work
25. The branch of dynamics concerned with the forces that cause or tend to cause motion (external forces - Newton's laws).
Angular motion
Inertia
Contact forces
Kinetics
26. Force that occur even if the objects are not touching i.e. gravity or magnetic.
referred to as translation
Non - contact forces
Length
Forces
27. Energy due to position
Coefficient of restitution
Acceleration
Potential energy
Time
28. Rectilinear translation and Curvilinear translation
Time
Occurs when all points on a body or object move the same distance - in the same direction at the same time
Two types of linear motion
Internal forces
29. Measure of the force of gravity acting on an object. Changes with location.
Kinetics
Weight
Displacement
Contact forces
30. Defined as the absolute value of the ratio of the velocity of separation of velocity of approach
Speed
Impulse
Occurs when all points on a body or object move the same distance - in the same direction at the same time
Coefficient of restitution
31. Mechanics of objects at rest of moving at a constant velocity.
Negative work
Static
Momentum
Average speed
32. Used to describe a change in position - the SI unit is meters - may also see miles - yards - feet and inches.
Law of acceleration
Law of Inertia
Length
External forces
33. The means by which energy is transferred from one object or system to another
Eccentric phase
Kinetic energy
Work
Displacement
34. Rate of motion of an object
referred to as translation
Kinetics
Speed
Strain energy
35. In reference to height - the greater the height the more gravitational potential energy
Gravitational potential energy
Contact forces
Rectilinear translation
Velocity
36. The branch of dynamics concerned with the description of motion (linear - angular and general motion).
Position
Positive work
Kinematics
Average velocity
37. The science concerned with the effects of forces acting on objects.
Positive acceleration
Mechanics
Average velocity
Dynamic
38. The property of an object to resist changes in its motion.
Inertia
Impulse
Dynamic
Position
39. Distance traveled/time
Static
Average speed
External forces
referred to as translation
40. 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.
Velocity
Impulse
Law of acceleration
Angular motion
41. A measure of the length of a path followed by an object
Contact forces
Major components in many sports
Distance traveled
Mechanics
42. Are forces that act on an object as a result of interaction with the environment surrounding it. Either non - contact or contact forces.
Rectilinear translation
External forces
Kinetics
Concentric contraction
43. 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
Length
Kinetics
Concentric contraction
Rectilinear translation
44. Speeding up in a positive direction
Positive acceleration
Motion
Vector
Length
45. Accelerate our bodies
Power
Momentum
Negative work
Motion
46. The study of forces and their effects on living systems.
Biomechanics
Momentum
Vector
referred to as translation
47. 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.
Two types of linear motion
Inertia
Work
Friction forces
48. Mechanics of objects in accelerated motion.
Dynamic
International System of Units
Angular motion
Eccentric phase
49. Speed and velocity
Power
Motion
Major components in many sports
Elastic collisions
50. Are forces that occur between objects in contact with each other i.e. air and water.
Vector
Average velocity
Gravitational potential energy
Contact forces