Ninja Warrior Competition

Diagram shows three athletes in a rope climbing exercise. Only one athlete will be chosen to complete in the 'Ninja Warrior Competition'.
Rajah menunjukkan tiga orang atlet sedang berlatih dalam Latihan memanjat tali. Hanya seorang atlet yang akan dipilih untuk bertanding dalam ' Pertandingan Pahlawan Ninja'.


 



Table shows information for the three athletes. These atletes practice rope climbing at different venues.
Jadual menunjukkan maklumat untuk tiga orang atlet.Tiga atlet tersebut berlatih memanjat di tempat yang berbeza.

 
Athlete
Mass(kg)
Length of rope(m)

Time(s)

P
50
8
115
Q
45
12
160
R
55
10
150

(a)(i) State the energy changes occur as athlete P climbs upwards.
         Nyatakan perubahan tenaga yang berlaku semasa atlet P memanjat ke atas.
        ...........................................................................................................................

    (ii) Calculate the energy of athlete P when he reaches at the end of the 8 m.
         Hitung tenaga bagi atlet P apabila dia sampai di hujung tali 8 m.




    (iii) Based on the situation above, state the physical principle involved.
         Berdasarkan situasi di atas, nyatakan prinsip fizik yang terlibat.

       ...........................................................................................................

(b) Calculate the power used to climb the rope for each athlete.
     Hitung kuasa yang digunakan untuk memanjat tali bagi setiap atlet.

     (i) Athlete P
         Atlet P





      (ii) Athlete Q
          Atlet Q





      (iii) Athlete R
           Atlet R









( c) (i) Based on the answer in (b), which athlete is the most suitable to be chosen as representative in that competition?
         Berdasarkan jawapan di (b), atlet yang manakah paling sesuai untuk dipilih sebagai wakil dalam pertandingan itu?

      ......................................................................................................................................

   (ii) State one reason for the answer in (c)
       Nyatakan satu sebab bagi jawapan (c)(i).

      ........................................................................................................................................