MIND EXERCISE V°

 SEA RESCUE   

Daisy was swimming in front of the Lido beach, and at the same time, Edward was listening the radio and … it has just heard a tsunamy warning with the possibility that the wave will be directed toward them  (“ …. the tsunamy now it’a 10km far the beach and has a speed of 20 km per hour …“).

Immediatly Edward jump in to the racing canoe stops in front of him, ant start to paddling in the direction of Daisy that was one kilometer away. Daisy and Edward, will be saved when they turn away more then a Km from the shore.

Will be Edward able to reach Daisy before the tsunamy wave?

“Continue” for paramiter summary and send your answere using a comment option.

sea rescue,escape from tsunamy SEA RESCUE PARAMETER

  • Tsunamy speed: 20km/h,
  • Tsunamy distance by Daisy position: 3km, Daisy swimming will increase you distance by the beatch,
  • Daisy speed: 1m/s,
  • Edware starting to catch paddling increasing the speed (initial speed =0 Km/h) by 0,1 m/sec, when Daisy go up in the canoe, the increasing speed will be 0,09m/s,
  • Tsunamy penetrate the inside of the coast for one km,
  • Daisy and Edward, just arrived at the shore, go away from the sea at a speed of 10 km per hour.

Waiting your welcome comment in order to check and send you the right calculation procedure, I wish you a … good swim.

 

x= -b ± √(b2 -4ac)/2a

xf=xi + vx*t

xf=xi + vx1*t + ½ ax t2