In his article Olympic Physics: The Discus, Matt Shipman states:
The athlete begins to spin, first on the right leg, then on the left - Leaving Cert Physical Education - Question 8 - 2022
Question 8
In his article Olympic Physics: The Discus, Matt Shipman states:
The athlete begins to spin, first on the right leg, then on the left. This builds up speed, or velo... show full transcript
Worked Solution & Example Answer:In his article Olympic Physics: The Discus, Matt Shipman states:
The athlete begins to spin, first on the right leg, then on the left - Leaving Cert Physical Education - Question 8 - 2022
Step 1
Name the plane and axis through which a discus thrower moves when they spin before releasing the discus.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The plane in which a discus thrower rotates is the Transverse plane. This plane divides the body into upper and lower parts. The axis of rotation is the Vertical or Longitudinal axis, which runs vertically through the body.
Step 2
Identify a movement from a physical activity of your choice that occurs in the same plane and axis identified by you in (a).
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A suitable movement could be a twist in gymnastics, where the gymnast rotates around the vertical axis while moving in the transverse plane.
Step 3
Categorise each of these quantities as either a vector or a scalar.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Speed is a Scalar as it only has magnitude but no direction.
Velocity is a Vector because it has both magnitude and direction.
Momentum is also a Vector since it depends on both the mass and velocity of the object, thus involving direction.
Step 4
Give a reason why you categorised velocity as a vector or scalar quantity in (c)?
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Velocity is categorised as a vector quantity because it describes the rate of change of an object's position, incorporating both speed (magnitude) and direction of motion.
Join the Leaving Cert students using SimpleStudy...
