Basic Motion
What is DISPLACEMENT?
how far something is from it's STARTING point
What force is ALWAYS pointing down ?
gravity
What are the 3 factors that affect projectile ?
height, speed, angle
What is Newton's 1st law?
Law of inertia - an object in motion stays in motion until something acts on it & an object at rest stays at rest until something acts on it
What type of bone is the ULNA?
Long bone
What is the formula for MOMENTUM ?
P = m * v
What force ALWAYS opposes motion between 2 surfaces ?
friction
What angle yields the longest distance for a projectile ?
45 degrees
What equation is represented by Newton's 2nd Law?
F = ma
What type of joint is the HIP?
Ball and socket
(cannot just say synovial !)
What are the units for VELOCITY ?
m / s
What force is always PERPENDICULAR to gravity ?
Normal
Where are men's and women's center of masses?
men - chest
women - hips
What is Newton's 3rd Law?
for every action there is an equal and opposite reaction
What are the 2 sections of the skeleton called ?
axial & appendicular
What is impulse ?
the way that force is applied over time
What are the types of DRAG ?
surface , wave, and form
What are 2 things that a figure skater can do to MAXIMIZE their angular momentum?
spin faster & move arms in
A bicep curl is what type of lever ?
3rd
Marathon runners would have the highest concentration of WHAT type of muscle fibers?
Type 1
What is momentum ?
How much an object wants to stay in motion
The Bernoulli Principle helps explain a specific type of force that helps airplanes fly. What is this force?
Lift OR thrust
What are the names of the TWO methods that athletes use while jumping to change their CoM?
Where is the FULCRUM in a 2nd class lever ?
on the left
what type of muscle can be found in the DIGESTIVE system ?
smooth muscle