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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 study of forces and their effects on living systems.
Internal forces
Speed
Average speed
Biomechanics
2. The branch of dynamics concerned with the forces that cause or tend to cause motion
Kinetics
Elastic collisions
Position
Average velocity
3. Location in space in relation to a fix point
Length
Position
Rectilinear translation
Mass
4. To every action there is always opposed an equal reaction
Dynamic
International System of Units
Law of action - reaction
Strain energy
5. Linear motion
Law of acceleration
Kinetics
Occurs when all points on a body or object move the same distance - in the same direction at the same time
Concentric contraction
6. Speed and velocity
Major components in many sports
Biomechanics
Non - contact forces
Potential energy
7. The shortening phase of the muscle in an isotonic lift is an example of positive work
Inertia
Inelastic collisions
Concentric contraction
General motion
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.
Average velocity
Friction forces
Vector
Position
9. The means by which energy is transferred from one object or system to another
Kinetic energy
Concentric contraction
Energy
Work
10. Measure of the force of gravity acting on an object. Changes with location.
Weight
Speed
Negative acceleration
Rectilinear translation
11. Forces that act within the object or system whose motion is being investigated.
Internal forces
Law of Inertia
Inertia
Inelastic collisions
12. The branch of dynamics concerned with the description of motion (linear - angular and general motion).
Kinematics
Strain energy
Acceleration
Inertia
13. The action or process of change in position - in which two things are necessary.
Elastic collisions
Mass
Strain energy
Motion
14. 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.
Static
Normal contact forces
Two types of linear motion
Contact forces
15. Mechanics of objects at rest of moving at a constant velocity.
Static
Distance traveled
Normal contact forces
Law of Inertia
16. The distance traveled in a straight line from the starting point to the ending point
Average velocity
Contact forces
Work
Displacement
17. Rate of motion in a specific direction
Velocity
Dynamic
Occurs when all points on a body or object move the same distance - in the same direction at the same time
International System of Units
18. The rate of doing work
Power
Potential energy
Eccentric phase
Contact forces
19. Are forces that act on an object as a result of interaction with the environment surrounding it. Either non - contact or contact forces.
Impulse
Static
Concentric contraction
External forces
20. SI units are the most commonly accepted units of measure based on the metric system.
International System of Units
Kinematics
Curvilinear translation
Inertia
21. The capacity to do work
Motion
Energy
referred to as translation
Speed
22. Occurs when an object moves in a positive direction but is slowing down
Rectilinear translation
Negative acceleration
Potential energy
Average velocity
23. Rectilinear translation and Curvilinear translation
Velocity
Gravitational potential energy
Two types of linear motion
Distance traveled
24. Energy due to deformation
Time
Law of action - reaction
Curvilinear translation
Strain energy
25. Used to describe a change in position - the SI unit is meters - may also see miles - yards - feet and inches.
Length
Occurs when all points on a body or object move the same distance - in the same direction at the same time
Forces
Acceleration
26. When an object speeds up - slows down - starts - stops or changes direction. Can be positive or negative
Kinetics
General motion
Acceleration
Negative work
27. Are forces that occur between objects in contact with each other i.e. air and water.
Forces
Length
Kinetics
Contact forces
28. Energy due to motion
Average speed
Eccentric phase
Kinetic energy
Positive acceleration
29. The branch of dynamics concerned with the forces that cause or tend to cause motion (external forces - Newton's laws).
Kinetics
Positive acceleration
Contact forces
Position
30. The product of forece multiplied by the time that force acts
Distance traveled
Biomechanics
Impulse
Work
31. Done by a force acting on an object if the object is displaced in the same direction as the force
Dynamic
Rectilinear translation
Weight
Positive work
32. The product of force and the amount of displacement in the direction of that force
Elastic collisions
International System of Units
Work
Time
33. A measure of the length of a path followed by an object
Position
Distance traveled
Motion
Power
34. Linear motion
Occurs when all points on a body or object move the same distance - in the same direction at the same time
referred to as translation
Vector
Law of acceleration
35. The objects stay together and move with the same velocity after impact (full back and linebacker)
Non - contact forces
Negative acceleration
Law of Inertia
Inelastic collisions
36. 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
Momentum
External forces
Acceleration
Law of Inertia
37. Mechanics of objects in accelerated motion.
Dynamic
Forces
Impulse
Length
38. Speeding up in a positive direction
Positive acceleration
Acceleration
Dynamic
Biomechanics
39. Is a mathematical representation of anything that is defined by its size or magnitude (a number) and its direction (its orientation).
Strain energy
Negative work
Gravitational potential energy
Vector
40. A push or a pull. They cause objects to start - stop - speed up - slow down or change direction. (N)
Forces
Inertia
Motion
Coefficient of restitution
41. A change in position that results from a combination of both linear and angular motion. Most movement is general is nature
Law of action - reaction
Major components in many sports
referred to as translation
General motion
42. All of the momentum of one object is transferred to the other (two pennies example)
Kinetic energy
Negative acceleration
Elastic collisions
Law of acceleration
43. Accelerate our bodies
Momentum
Potential energy
Inertia
Forces
44. 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.
Concentric contraction
Impulse
Angular motion
Contact forces
45. Done by a force acting on an object when the object is displaced in the direction opposite the force acting on it
Work
Law of Inertia
Negative work
General motion
46. Duration of an event - SI unit if seconds - minutes - hours and days all based on s.
Occurs when all points on a body or object move the same distance - in the same direction at the same time
Time
Law of Inertia
International System of Units
47. Displacement/time
Non - contact forces
Average velocity
External forces
Internal forces
48. The muscle elongates is an example of negative work
Strain energy
Eccentric phase
Position
Negative acceleration
49. Rate of motion of an object
Distance traveled
Motion
Potential energy
Speed
50. 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
Work
Contact forces
Work