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PHYSICS POP QUIZ 3 (EFFECTS OF FORCE AND IMPULSIVE FORCE)



NAME: ………………………………………………………
CLASS: 4 SN 2
TEACHER: EN. IDRUL NAFIZ BIN MUHAMAD NAJIB                                      10

You are given only 10 minutes to complete all the questions. Answer all questions on the
paper

   1) Diagram 1 shows an egg being dropped onto a wodden block. The egg cracks after
      impact. The velocity of the egg just before the impact is 5 m/s.
                                                      Egg




                                                              Wooden block
      a) Name the force involved during the impact
         …………………………………………………………………………(1 mark)

      b) Give one reason why the egg cracked after the impact
         …………………………………………………………………………………
         …………………………………………………………………………(1 mark)

      c) The mass of egg is 0.05 kg and time of impact is 0.1 s. Calculate the impulsive
         force and impulse




                                                                                (4 mark)

      d) Give one suggestion how you would avoid the egg from cracking when
         dropped from the same height
         …………………………………………………………………………(1 mark)
2) A horizontal force is exerted on a box of mass 10 kg as shown in Diagram 2. The
   box accelerates at 2 ms-2

                                                   F




   a) What is the value of horizontal force exerted on the box?




                                                                          (1 mark)

   b) If the frictional force acting between the box and the floor is 5 N what is the
      resultant force exerted on the box?




                                                                          (2 mark)

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Pop quiz 2 (physics)

  • 1. PHYSICS POP QUIZ 3 (EFFECTS OF FORCE AND IMPULSIVE FORCE) NAME: ……………………………………………………… CLASS: 4 SN 2 TEACHER: EN. IDRUL NAFIZ BIN MUHAMAD NAJIB 10 You are given only 10 minutes to complete all the questions. Answer all questions on the paper 1) Diagram 1 shows an egg being dropped onto a wodden block. The egg cracks after impact. The velocity of the egg just before the impact is 5 m/s. Egg Wooden block a) Name the force involved during the impact …………………………………………………………………………(1 mark) b) Give one reason why the egg cracked after the impact ………………………………………………………………………………… …………………………………………………………………………(1 mark) c) The mass of egg is 0.05 kg and time of impact is 0.1 s. Calculate the impulsive force and impulse (4 mark) d) Give one suggestion how you would avoid the egg from cracking when dropped from the same height …………………………………………………………………………(1 mark)
  • 2. 2) A horizontal force is exerted on a box of mass 10 kg as shown in Diagram 2. The box accelerates at 2 ms-2 F a) What is the value of horizontal force exerted on the box? (1 mark) b) If the frictional force acting between the box and the floor is 5 N what is the resultant force exerted on the box? (2 mark)