MARANATHA HIGH SCHOOL
QUIZ OF PHYSICS S2
1) A piece of rock has a volume of (30.00±0.10)cm3 and a mass of (60.30
± 0.20)g. Find:
a) The density of this rock without uncertainty.
(2 marks)
b) Its uncertainty.
(2 marks)
2) List three careers that depend on knowledge acquired in physics.
(3 marks)
3) List at least six laboratory safety rules to be observed while carrying
out experiments in the laboratory.
(6 marks)
4) Name two instruments which can be used to measure, accurately, the
diameter of a small metal sphere.
(2 marks)
5) A body has mass and weight. Which of the two quantities
a) Is a vector?
(1 mark)
b) Is measured in newton?
(1 mark)
c) Remain the same at any place?
(1 mark)
6) Newton’s law of gravity states that the gravitational force between two
masses, m1 and m2, separated by a distance r is given by 𝐹 = G
What is the dimensions of G ?
a) L3M(-1) T(-2)
b) M2 L(-2)
c) M L T-2
d) M-1 L-3 T2
7) Discuss the difference between accuracy and precision.
m1.m2
𝑟2
.
(3 marks)
(2 marks)
8) A bicycle travels 15km in 30minutes. What is its average speed ?
(2 marks)
9) Complete each of the following sentences using appropriate term from
the box. You may use any keyword once or not at all
Magnetized, Magnetic Field, Demagnetized, Magnetic Pole
a) …………………… is a region at each end of a magnet where the
magnetic field is strongest.
(1 mark)
b) Area around a magnet in which it can exert a magnetic force is called
……………………………………………….
(1 mark)
0
c) At around 80 c a magnet will become …………………………….
Permanently if exposed to this temperature for a period.
(1 mark)
10) Draw a cone: a) In a stable equilibrium b) In unstable equilibrium
and c)In a neutral equilibrium.
(3 marks)
11) a) Name states of equilibrium.
b) state how a body can be made more stable.
(3 marks)
(2 marks)
12) a) Define the term ‘‘Deceleration’’ of a moving body.
(1 mark)
b) A car slows down from 72km/h with a uniform deceleration of
2m/s2. How long will it take to reach 18km/h?
(3 marks)
SECTION B: CHOOSE ONLY ONE QUESTION (15 MARKS)
1. In an experiment to determine the acceleration due to gravity g of
a falling ball-bearing; the following results were obtained.
Time, t/s
1
2
3
4
5
t2/s2
Distance h/m
9
5
20
45
80
125
a) Copy the above table and complete the missing values of t2.
(3 marks)
2
b) Plot the graph of distance h against time t .
(9 marks)
c) Find the slope, s of the graph showing clearly how you get the
answer.
(3 marks)
2. Study the following velocity-time graph of a 5 kg moving body.
And answer the questions that follow:
m/s
12
10
8
6
4
2
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
t/s
a) Is this motion rectilinear motion with constant acceleration or
uniform rectilinear motion?
(1 mark)
b) From the graph, determine the initial velocity of the body.
(1 mark)
c) Find the slope of the graph. This is the acceleration of the
moving body.
(4 marks)
d) Use the results obtained from 2(c) and plot the acceleration
time graph.
(4 marks)
e) Determine the distance covered/travelled from the given
velocity-time graph.
(5 marks)