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