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P. 3815. A car travels at a speed of 12 km/h towards south for five minutes, then it turns toward east and moves at a speed of 25 m/s for 3 minutes, and finally it changes its velocity to 108 km/h and travels toward north-east for two minutes. Calculate the length of its displacement and the average speed.

(3 points)

Deadline expired on 11 October 2005.

Statistics on problem P. 3815.
 450 students sent a solution. 3 points: 261 students. 2 points: 98 students. 1 point: 65 students. 0 point: 19 students. Unfair, not evaluated: 7 solutions.

• Problems in Physics of KöMaL, September 2005

•  Támogatóink: Morgan Stanley