Matataki gives the others a crash course in model rocket building. Some time later, Umika and her friends attend a model rocketry festival, and run into a familiar face...
Try calculating the time from ignition
حاولي حساب الوقت من لحظة الإشعال
en combien de temps s’ouvre
le parachute après le décollage ?
Prova a calcolare il tempo dall'accensione
all'apertura del paracadute.
Calcule o tempo entre a ignição
Попробуй подсчитать время
от зажигания