AOS2 Chapter 4 (Kinematic Concepts Of Human Movement)

Question 1

What is linear motion and how can it been explained by?

Answer 1

• Movement where all body parts move in the same direction at the same speed
• Distance (measurement between two points), displacement (change of position) , speed (distance/time), velocity(displacement/time) and acceleration (change in velocity/change in time)

Question 2

What is projectile motion and the two components of it?

Answer 2

• The factors that influence the flight path of the projectile
• Horizontal, distance covered and affected by air resistance
• Vertical, height reached and affected by gravity

Question 3

How to create spin on a ball?

Answer 3

• Eccentric forces such as hitting the ball under (backspin), over (topspin) and side (sidespin)
• Bowler for cricket flicks his/her wrist before letting go of the ball to create spin

Question 4

Factors that affect a projectiles path

Answer 4

• Angle of release, the angle at which an object is projected into the air
• Speed of release, the greater the speed, the greater the distance covered by the object
• Height of release, difference between the release height and the landing height
• Varies for different sports