Jadual menunjukkan tiga jenis kereta mainan kawalan jauh dan ciri-cirinya.
(a) (i) Based on table, which toy car that will accelerate more?
Berdasarkan jadual, kereta mainan yang manakah akan lebih tinggi pecutannya?
..................................................................................................................
(ii) Give one reason for the answer in a(i) and state the relationship between the reason and physics concept involved.
Berikan satu sebab kepada jawapan di (a) i dan nyatakan hubungan di antara sebab dan konsep fizik yang terlibat.
............................................................................................................................................
(b) Diagram shows, Fatimah is pushing a 5.0 kg box with different forces on three type of rough surface of wooden plane, P, Q,and R.
Rajah menunjukkan Fatimah sedang menolak kotak 5.0 kg dengan daya-daya yang berbeza di atas permukaan kasar satah kayu, P, Q, dan R.
Table shows the magnitude accelerations, a and force applied, F to push the box on each surface of wooden plane.
Jadual menunjukkan magnitud pecutan, a dan daya F yang digunakan untuk menolak kotak tersebut di atas setiap permukaan satah kayu.
(i) What is the meaning of frictional force?
Apakah yang dimaksudkan dengan daya geseran?
................................................................................................................................................
(c) Calculate the friction force of each surface of wooden plane.
Hitung daya geseran untuk setiap permukaan satah kayu.
(i) Wooden plane A
(ii) Wooden plane B
(iii) Wooden plane C
(d) Determine the most suitable surface of wooden plane to build a slide at children's playground. Give a reason.
Tentukan permukaan satah yang paling sesuai untuk membina gelonsor di taman permainan kanak-kanak. Berikan satu contoh.
................................................................................................................................
.................................................................................................................................
(e) State two modifications that can be done to reduce the friction of the slide.
Nyatakan dua pengubahsuaian yang boleh dilakukan untuk mengurangkan geseran.
...............................................................................................................................
...............................................................................................................................