If an elf blows up a balloon and it expands to a radius of 50 cm and exerts a pressure of 1.5 Pa on its surface, what is the force exerted by the air inside? Assume the balloon is a sphere with area 4*pi*r^2
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15
Santa is checking his list and lifting his 23 kg bag of toys up and down. If he lifts it 0.5 meters, how much work does he do each time? (Use g = 10 m/s^2)
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15
Santa accidentally dropped a bag of presents in the ocean. If the bag has a mass of 10 kg and a volume of 0.008 mยณ, will it sink or float in water? (Assume the density of water is 1000 kg/m 3 1000 kg/m^3 )
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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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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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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
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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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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seesaw
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gift
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gift
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lifesaver
Give 25 points!
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heart
Other team wins 10 points!
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magnet
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baam
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10
How does Santa measure the volume of his sack of presents?
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15
If the elves throw snowballs with a kinetic energy of 16 Joules and a mass of 0.5 kg, what is the speed of the snowballs?
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10
What force helps Santa not slide off a steep, icy roof?
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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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15
If Santa accelerates when leaving a rooftop, what does his velocity-time graph look like?