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