/jp/ - Otaku Culture

1.) If Marisa fires a Master Spark at the top of Youkai Mountain directly aimed at Alice with a diameter of 2.0m, knowing that Alice is 10km away with a 1km difference in elevation, and that the Master Spark travels at the speed of light (299792458m/s), how fast must Alice move to avoid the laser?
2.) Aya and Youmu decide to have a race to determine who the fastest thing in Gensokyo is. Feeling confident, Aya gives Youmu a 10 second head start. Youmu takes off at a speed of 100km/h, and ten seconds later, Aya follows at 40m/s. How long will it take for Aya to catch up?
3.) Nitori decides to go test her new invention, a cucumber launcher. She fires a 200g Cucumber at 20 degrees with a velocity of 25 m/s. How far will it travel? When will it land after launching?
4.) Marisa, stealing books from Patchouli puts 3 450g books in her bag which weighs 10g. How much force must Marisa exert to lift the bag vertically?
5.) Reimu, Yuyuko, and Yukari are struggling over a box filled with coins. Reimu pulls the box in hopes of getting “donation” money at 230 degrees with a force of 700N. Yuyuko wants to eat the box of coins because Youmu forgot to cook dinner, pulling with a force of 1800N at 2 degrees. Yukari, feeling in a troll mood pulls the box at a force of 2500N at 100 degrees. What is the net force exerted on the box?
6.) Reisen drags a cart filled with 1000 pieces of medicine. The cart weighs 90kg and each piece of medicine weighs 50g. If the coefficient of friction is 0.83, how much force must Reisen drag the cart with to move it with a net acceleration of 3m/s2?
7.) After Tenshi destroyed the Hakurei Shrine, Reimu hadd to go make repairs. In order to fix the roof, Reimu drags the materials weighing 100kg up a 25 degree ramp. If the coefficient of friction is 0.6 between the materials and the ramp, how much force does Reimu have to exert to drag it up at a constant speed?

>>13602239
Iku is my Christmas Cake wife.

Underrated touhou thread.
Appreciation for the best underrated 2hus and not just picking less popular ones on purpose to get hipster street cred.

>>12804665
I need a cool onee san figure to guide me places

Has anyone ever gone to the other boards and noticed /jp/'s shitposting culture there?

Are they turning into us or are we turning into them?