ice skating / skiing - to maximise speed and fluency over ice/snow
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heart
Other team wins 25 points!
Oops!
magnet
Take 25 points!
Okay!
shark
Other team loses 25 points!
Okay!
thief
Give points!
5
10
15
20
25
trap
No points!
Oops!
rocket
Go to first place!
Okay!
fairy
Take points!
5
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20
25
baam
Lose 25 points!
Oops!
monster
Reset all scores!
Oops!
seesaw
Swap points!
Okay!
gift
Win 25 points!
Okay!
lifesaver
Give 20 points!
Oops!
10
What can dynamic/kinetic friction also produce?
heat and sound
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10
What is power?
the rate at which work is performed - P = W/T or P = Fv
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10
Define friction
âA force that acts parallel to the interface of two surfaces that are in contact, and opposes their relative motionâ
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10
Give an illegal use of CoR in sport
Freezing of baseballs / bats CoR is limited
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10
Which coefficient of friction (static or dynamic) is almost always higher?
Static - This explains why it is harder to start moving a heavy sled than to keep it moving.
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10
How can power output be optimised
Technique and sports equipment design
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10
what factors influence the coefficient of restitution?
material of objects, height of drop
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10
What is Newton's 2nd law?
Law of motion/acceleration - force is equal to mass multiplied by acceleration - the acceleration of an object is directly proportional to the net force acting
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10
what does the term collision mean?
when two or more objects come into contact with (exert forces on) each other during a short period of time.
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10
give a legal example of CoR use in sport
squash ball warm up - ball travels faster when it is warm
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10
What is Newton's First Law?
Law of inertia - an object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction, unless acted upon by an
