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)