Exam 2 (yuh)

Question 1

Force is?

Answer 1

Friction, gravity, and air resistance

Question 2

Law of inertia?

Answer 2

An object a rest will stay that way unless there is force to cause it to move
An object in motion will continue that motion (direction and speed) unless there is a force to cause it to change

Question 3

Law of acceleration?

Answer 3

The change in motion of an object is proportional to the force applied
The change in motion is in the direction that force is applied

Question 4

Law of action and reaction?

Answer 4

For every action force, there is an equal (in magnitude) and opposite (in direction) reaction

Question 5

Motion capture?

Answer 5

High speed cameras, Micro Electro mechanical systems (MEMS) sensors, Electronic timing device

Question 6

High speed cameras?

Answer 6

ex: baseball swing

Question 7

Micro Electro mechanical systems (MEMS) sensors?

Answer 7

Inertia measurement units (IMU)
Mini accelerometers/ gyroscopes with micro electrical circuits

Question 8

Force movement devices?

Answer 8

Force transducers, Force platform, Plantar pressure system, Electromyography (EMG) system

Question 9

Force transducers?

Answer 9

Measure forces

Question 10

Force platform?

Answer 10

Ground reaction forces

Question 11

Plantar pressure system?

Answer 11

pressure=force applied over a given area

Question 12

Electromyography (EMG) system?

Answer 12

Skeletal muscle force

Question 13

Movement technique?

Answer 13

Precise position, prescribed movement patterns, proper timing

Question 14

Factors influencing technique?

Answer 14

Task
Performer goal
Performer characteristics (hand-eye coordination)
Environment (crowd, weather)
Laws of physics