2A8m - Daya Impuls ke atas telur terhempas, pelantak cerucuk

6     Diagram 6.1 and Diagram 6.2 show two eggs released from the same height and drop on to Surface A and Surface B respectively.         Rajah 6.1 dan Rajah 6.2 menunjukkan dua biji telur dilepaskan daripada ketinggian sama dan jatuh ke atas permukaan A dan permukaan B masing-masing.                (a)   What is meant by impulse?                 Apakah yang dimaksudkan dengan impuls?                     ..............................................................................................................                                [1 mark]                                                                                                                               (b)  With reference to Diagram 6.1 and Diagram 6.2;                 Merujuk kepada Rajah 6.1 dan Rajah 6.2;                 (i)       Compare the force on the eggs that strike Surface A and Surface B.                             Bandingkan daya pada telur yang menghentam  Permukaan A dan Permukaan B.                             .....................…………………………………………………………………….. [1 mark]                 (ii)     Compare the time of impact of the eggs on Surface A and Surface B.                             Bandingkan masa hentaman telur itu pada Permukaan A dan Permukaan B.                             .....................…………………………………………………………………….. [1 mark]                 (iii)    Compare the change in momentum of the eggs in both situations.                             Bandingkan perubahan momentum pada telur dalam kedua-dua situasi.                             .....................…………………………………………………………………….. [1 mark]                 (iv)    State the relationship between the force produced in a collision and the time of impact.                         Nyatakan hubungan antara daya yang dihasilkan dalam suatu perlanggaran dengan masa hentaman.                             .....................…………………………………………………………………….. [1 mark]                                                                                                                                       (v)     Suggest a suitable material for Surface A.                             Cadangkan satu bahan yang sesuai bagi Permukaan A.                             .....................…………………………………………………………………….. [1 mark]         (c)  Diagram 5.3 shows a pile hammer used in driving a pile into the ground at a construction site.                    Rajah 5.3 menunjukkan pelantak cerucuk yang digunakan untuk menanam cerucuk ke dalam tanah di suatu tapak pembinaan.                                                Explain how a large force is produced by the pile hammer in driving the pile into the ground.                 Jelaskan bagaimana suatu daya yang besar dihasilkan oleh pelantak cerucuk itu semasa menanam cerucuk itu ke dalam tanah.                 ……………..…………………………………………………………………………...                 ……………..…………………………………………………………………………...                 ……………..…………………………………………………………………………...                                                                                                                                  [2 marks] JAWAPAN:  Question 5 1 5 (a) 1 State the meaning of impulse correctly   Change in momentum 1 (b) (i) 1 State the correct comparison of the force Force on the egg in Diagram 5.2 is larger 1       (b) (ii) 1 State the comparison in the time of impact correctly Time of impact for Surface A is longer / vice versa 1 (iii) 1 State the comparison in change in momentum correctly The change in momentum is the same  1 (iv) 1 State the relationship between the time of impact and the force produced in a collision correctly The time of impact is inversely proportional to the force produced in a collision 1 (v) 1 State one suggestion correctly Sponge / carpet / towel / cloth / grass or any other acceptable materials 2 (c) 1 State the time taken for impact correctly The time taken during the impact is small/short 1 State the impulsive force produced on the pile correctly The impulsive force produced on the pile during impact is large 8