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