Walk This Way
Kinetic Vibes
Jump Around
Work It
Circular Ways
100
Heel strike to heel strike on the same foot
What is the gait cycle (or one stride)?
100
m(v_f - v_i)
What is the change in momentum?
100
This Newton's law best describes the ground reaction force during a countermovement jump.
What is the Law of Action-Reaction (Newton's Third Law)?
100
The energy due to the vertical position of a body.
What is potential energy?
100
It is the alpha in the following version of Newton's 2nd Law of motion:
What is angular acceleration?
200
Phase in which the foot is on the ground.
What is the stance phase?
200
The type of torque that the hamstrings muscles create about the knee joint.
What is an flexor torque?
200
The direction of acceleration of a jumper's COG when the GRF is less than the jumper's weight.
What is negative?
200
The amount of work of someone performing 10 full reps of a bench press.
What is 0 J?
200
It is the "r" in this equation:
T = Fxxr
What is the moment arm?
300
Phase in which the leg is advancing forward.
What is the swing phase?
300
The product of the average force and the time of force application.
What is impulse?
300
The type of acceleration of an athlete who is slowing down when moving towards the ground during a squat as depicted here:
What is positive acceleration?
300
The amount of mechanical work expenditure of someone performing 10 full reps of a bench press of 60 kg (~589 N) with a top-to-bottom vertical distance of 50 cm.
What is 5890 J?
300
This is the resistance to a change in rotational motion and is proportional to mass and the square of the distance away from the axis of rotation.
What is the moment of inertia?
400
The term typically used to describe the motion of the body's COM during walking.
What is an inverted pendulum?
400
Daily Double!
The vertical acceleration of the COG of Ashley (60 kg) when landing from a countermovement jump at a vertical GRF of 1500 N.
What is +15 m/s2 ?
400
The type of acceleration of an athlete who is speeding up when moving away from the ground during a countermovement jump as depicted here:
What is positive acceleration?
400
Daily Double!
The work needed to bring Ashley (60 kg) to a complete stop during landing from a countermovement jump at a vertical velocity of -4 m/s and a vertical GRF of 1500 N.
What is -480 J?
400
v^2 / r
What is centripetal acceleration?
500
This muscle(s) maintains frontal plane stability during the single-leg stance phase of walking.
What are the gluteus medius and tensor fascia latae muscles (hip abductors)?
500
The time it took Ashley (60 kg) to come to a complete stop during landing from a countermovement jump at a vertical velocity of -4 m/s and a vertical GRF of 1500 N.
What is 0.27 seconds?
500
1.22625xxt^2
What is jump height (vertical displacement)?
500
The jump height of Ashley (60 kg) during a countermovement jump with 0.8 seconds of air time.
What is 78 cm?
500
The horizontal component of the biceps muscle when its resultant force is 500 N and the elbow is flexed 135 degrees.
What is 353 N in distraction?