Module 4 Sports Biomechanics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Biomechanics can be defined as a study of biological systems using mechanics. In applying Biomechanis to sports, what are the benefits for coaches?

G.E.M.I.E

A
  • Eliminate guessing
  • Understand effect of training
  • Match athlete to sport
  • Reduce the risk of injury
  • Assess efficacy of sport equipment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The following is an example of which Newton’s law of motion?

If one drove a car directly into a brick wall, the car would stop because the force exerted upon it by the wall. However, the driver requires a force to stop his body from moving such as a seat belt, otherwise the law of _____ will cause his body to continue moving at the original speed until his body is acted upon by some force

A

Law of Inertia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

F= ma,

What does this mean when you replaced a smaller table tennis ball with a bigger ball?

A

Force is defined as an accelerating mass.
If you use the SAME force to push a 40mm table tennis ball and push a 38mm table tennis ball, the smaller ball will have MORE acceleration than the bigger ball because the ball has LESS mass. (after 2000 Olympics in Sydney, ITTF replaced to a bigger ball 40mm in October 2000) Maybe it was just too fast with the smaller ball.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Firing a gun/ Hammering a nail/ Tennis ball dropped from a height/Launching a rocket, they are all examples of the Law of _______________

a) Interaction
b) Acceleration
c) Inertia

A

A) Interaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the Displacement and Distance when a taxi travelled from Jurong to Changi via AYE and ECP?

A

Distance would be about 36.3km.
But Displacement is the distance travelled in specific direction (vector); it is only 27.8km only (in a straight line or air distance)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When can Displacement be equal to zero?

A

When you end at the same point where you started! E.g closed loop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the units for displacement?

A

The international system of units (SI) is the meter (m)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is Gravity?

A

Gravity is acceleration force at 9.81m/square second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If an object is projected into the air, it moves in a parabolic shape due to gravity exerted on it. Factors affecting the flight path of a Projectile are ___________

A.S.H + GAS (not covered by BSS)

A
  • Angle of Release
  • Speed of Release
  • Height of Release
  • Gravity
  • Air Resistance
  • Spin
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What would happen if the angle of release were too high such as shooting a basketball?
a) Good distance
b) Poor distance
( Think Projectile motion)

A

B) Poor distance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What would happen if the angle of release were very low in a tennis game?

a) Poor distance
b) Poor flight time and poor distance possibly
c) Good

A

B) Poor flight time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In Projectile motion, the greater the height of release the greater the distance gained. (given the speed and angle of release remain the same)
Will a golfer hitting a ball off the top of a hill cover a further or shorter distance than a golfer at the bottom of the hill?

A

Further

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Define Angular motion

A

Movement about an axis through a radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A figure skater doing a double axle or a swing of a baseball bat/ a gymnast going around the high bar, are all example of Linear motion OR Angular motion

A

Angular motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How do coaches perform observation and analysis?

A

Preparation: Identify Objectives and phases of skill, critical element of each phase, write observation plan.

Observation strategies: Visual means, External marks, sound contacts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is Notational Analysis in sport performance?

A

The study of strategies or tactics use in team, dual or individual sports from viewing video recordings of a competitive match and documenting it in a quick and yet detailed fashion so that information derived, strategies or counter strategies can be developed for subsequent matches.

17
Q

Is Acceleration directly proportional to mass or inversely in Newton’s second law ?

A

If thenet forceon an object is not zero, the object will accelerate. … The magnitude of theaccelerationisdirectly proportionalto thenet forceapplied, andinversely proportionalto themassof the object.

18
Q

How should you launch a golf ball to achieve the greatest distance?

A

A projectile, in other words, travels the farthest when it is launched at anangleof45 degrees

19
Q

What is the formula for acceleration?

A

Change is Displacement divided by change in time

20
Q

What’s the SI unit of acceleration?

A

SI unit ofaccelerationis the meter per second squared

21
Q

What is meant by field of view?

A

It is the open observable area a person can see through his/her eyes or via an optical device.