Form 5 Physics Mid Year 2014 with answer .pdf - Form 5...

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Section A: Objective Questions (30%)
1 Which of the following lists make up of scalar quantities?
A Velocity, acceleration, time B Work, power, inertia
C Momentum, impulse, weight D Electric current, energy, distance
2 A vernier callipers being used to measure the thickness of glass wall of a boiling tube. The vernier
callipers has zero error of − 0.02 cm. The internal diameter and external diameter of the boiling tube
are measured as shown in Diagram 1 (a) and Diagram 1 (b) respectively.
Diagram 1 (a)
0 10
3
cm
0 10
2
5
cm
What is the thickness of the glass wall of the boiling tube?
3 Which of the following diagrams shows that the gun shots on a target board is consistent but less
accurate?
D
4 The gravitational force, F , between two bodies of masses m
1
and m
2
which are separated by a
distance r is given by the equation below.
2
2 1
r
m Gm
F 
where G is universal gravitational constant.
What is the unit of G ?
5 A trolley pulled a ticker tape through a ticker timer of frequency 50 Hz and the tape produced is
shown in Diagram 2.
Diagram 2
Find the acceleration of the trolley.
2
0 10
3
cm
0 10
2
5
cm
5
3

4
6 During collision, the large bumper of a vehicle serves as a safety feature to reduce
7 An object is launched vertically upwards from point X. The object reaches the maximum height at
point Y. If the air friction is neglected, which of the following statements is correct ?
A The kinetic energy of the object at point Y is maximum.
B The momentum of the object at point Y is maximum.
C The acceleration of the object at point Y is zero.
D The acceleration of the object at point Y is the same as that at point X.
8 Diagram 3 shows an object with a weight of W being hung between
two sides of a wall using ropes K, L and M. The tensions of rope K and
rope L is T
1
and T
2
respectively.
Which of the vector diagrams shows the correct triangle of forces
when the object is in static equilibrium?
B D Diagram 4 shows an object of mass 24 kg is pulled up rough ramp using a force of 100 N. The
object is moving up the ramp at constant speed of 1.0 ms
− 1
.
Diagram 4
Calculate the energy lost in form of heat to overcome the friction moving up the ramp.
A 308 J B 320 J
C 480 J D 492 J