Santa's sleigh bells reflect sound around the North Pole. If an elf stands 600 meters away from Santa and hears the bell 1.76 second later, what is the speed of sound in the North Pole air?
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25
Santaโs sleigh weighs 2000 kg and is being pulled by 8 reindeer. Each reindeer exerts a force of 200 N. The sleigh experiences air resistance of 150N. What is the acceleration of the sleigh?
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10
How does Santa measure the volume of his sack of presents?
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15
Rudolph's nose shines so bright, it can be seen reflecting off a frozen lake. If the angle of incidence of Rudolphโs nose light is 30 degrees, what is the angle of reflection in the ice?
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15
Mrs. Claus baked cookies and placed them in a straight line, 5 cm apart. If there are 20 cookies, what is the total distance from the first to the last cookie?
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5
If Santa's sleigh is delivering presents and moving with constant speed, what is the net force acting on it?
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5
Rudolph ran around the North Pole non-stop. If he used a digital timer that started at 5:00 pm and ended at 5:30 pm, how long did he run in seconds?
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baam
Lose 10 points!
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star
Double points!
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rocket
Go to first place!
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banana
Go to last place!
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15
If Santa accelerates when leaving a rooftop, what does his velocity-time graph look like?
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15
If a reindeer pushes a sleigh with a force of 15 N for 3 minutes, how much work is done if the sleigh doesn't move?
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trap
No points!
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shark
Other team loses 25 points!
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rocket
Go to first place!
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baam
Lose 15 points!
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monster
Reset all scores!
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fairy
Take points!
5
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25
fairy
Take points!
5
10
15
20
25
baam
Lose 15 points!
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15
Santa needs to calculate how efficient his new toy-making machine is. If it uses 1000 J of electrical energy and produces 600 J of useful toy energy, what is its efficiency?
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15
How much power does Rudolph exert if he pulls Santaโs sleigh, doing 500 J of work over a distance of 5 meter in 10 seconds?
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15
Santa uses radio waves to communicate with elves. If he switches to microwaves, how does the frequency change?
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10
What force helps Santa not slide off a steep, icy roof?