WorksheetsWeek 12 SPS612
Total questions: 10
Worksheet time: 9mins
You are coaching a cyclist for a race with steep uphill segments (around 8% gradient). Based on your understanding of cycling biomechanics and posture optimization, select which posture adjustments would best help the cyclist improve mechanical output and efficiency on these uphill sections?
i. Maintain a normal posture with hands on the drops to minimize frontal area and reduce drag.
ii. Adopt an upright posture, especially in windless conditions and on slopes steeper than 7.5%, to improve economy.
iii. Increase mechanical output by shifting forward on the saddle and flex the trunk (leaning forward).
iv. Sit back on the saddle and keep the trunk vertical to maximize comfort and endurance.
i, ii, iii
ii, iii
ii, iii, iv
all of the above
During a squat exercise, Zairil lifted 150kg for 6 repetitions. Each repetition requires Zairil to lower the barbell 30cm vertically. Calculate the total work done during the concentric phases for that set.
2646 Nm
900 Nm
1800 N
3240 N
During a cycling performance analysis, the angle between the cyclist's upper arm and forearm is measured to be 150.3° at the start and reduces to 60.8° at the end of the stroke. What is the angular displacement?
*note - 1 radian = 57.3 degrees
θ = s/r
1.56 rad
2.43 rad
89.5 rad
4.5 rad
A runner completes a 200-meter distance in 25 seconds during a marathon. Determine the runner’s average speed during this segment:
8.0 km/h
8.0 m/s
7.2 m/s
7.2 km/h
Newton's _____ law states that a body will maintain a state of rest or constant velocity
unless acted on by an external force that changes the
state
1st
2nd
3rd
4th
*Select ALL correct answers
Apply the principles of mechanical stability to the following scenario:
A basketball player is preparing to receive a pass. As the player anticipates the ball, they position their feet shoulder-width apart and slightly bend their knees. To prepare for the catch, the player shifts their weight slightly forward, maintaining a low and centrally aligned center of gravity.
Identify two mechanical principles the player is using to enhance stability.
Increasing the base of support
Decreasing the base of support
Heightening the center of gravity
Lowering the center of gravity
_______ is the standard unit for quantifying angles in mathematics
degree
radian
turn
arc
When a figure skater pulls their arms in while spinning, how does this affect their rotational speed?
It decreases
It remains the same
It increases
It fluctuates
What is the formula for Potential Energy
PE = ½ m · v2
PE = ½ k · Δx2
PE = m·g·h
PE = ma
What is the term for the immediate physiological responses of the body during exercise?
Chronic adaptations
Acute responses
Long-term effects
Metabolic changes
