I chose the center coordinate in an arbitrary spot, any other spot would do the trick anyway.
Look at it very carefully, I will guide you.įisrt thing you wanna do, is checking the position of the three meeting points: D (Diego´s house), S (Silvia´s house) and C (cinema), check that the relative positions in the scheme match the ones from the statement above. Most of the time in this problem, I spent it doing the scheme. This problem is a tsar bomba in terms of atomical silliness.
#CINEMATICA 2 ESO MOVIE#
He has to wait 10 minutes for Silvia to finish with her make-up, then, they have to ride a cab, wich will drop them at the cinema 15 minutes after.Ī- Choose a reference system, and determine the position vector of both houses and the cinema.ī- Find the displacement vectors and the taxi´s average speed.Ĭ- If they reached the cinema 5 minutes after the movie begun, calculate the time when Diego leaves his house.ĭ- Determine the average speed vector of Diego and his modulus, in the trip between his house and the cinema. V m = - 6 km/h i + 8 km/h j (i to the East j to the North). One day they decide to go together to the cinema the movie starts at 19:30h, and the cinema is located 30blocks to the East and 40 blocks to the North of Diego´s house.ĭiego picks up Silvia: to accomplish this, he must catch the bus, wich will take him from his house to Silvia´s, with an average speed vector :
2- Diego´s house is located 15 blocks (1,5km ) to the East and 20 blocks (2km) to the South, from Silvia´s house. CINEMATICA, Guia 1 Ej 02, practica online de fisica
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