REVIEW WORKSHEET
PHYSICS
Name
Class
Date ____--------------------------_____________
Read each question carefully and make you sure know what you have been asked to do before starting
your answer.
Show ALL your working when answering numerical questions. Lines are provided on the question paper
for your answers.
ATTEMPT ALL QUESTIONS
-21. State the five basic quantities, their S.I. units and the symbols of their S.I. units.
Base Quantity
Basic Units
Symbols for Units
1
2
3
4
5
[10]
(b) State five derived quantities, their units and the symbols of their S.I. units
Derived Quantity
Units
Symbols for unit
1
2
3
4
5
[10]
Total Marks[20]
-32. Convert the following numbers into scientific notation:
a.
3,400
b.
0.000023
c.
101,000
d.
0.010
(b) Convert the following numbers into standard notation:
a.
2.30 x 104
b.
1.76 x 10-3
c.
1.901 x 10-7
d.
8.65 x 10-1
e.
9.11 x 103
-43.Calculate the resultant vectors for each of the following and represent each resultant with the
arrow showing the direction and the magnitude of the force.
a.
70N
50N
[2]
b. 120N
210N
[2]
c. 1320N
1500N
500N
[2]
d. Find the magnitude and direction of the resultant vector .
12N
13N
[4]
-5-
-6(b) Classify each measurement as a scalar or vector.
a.
20 books on a shelf
b.
A car travels 25 km east
c.
A plane flies 500 km
d.
The car drives 100 km/h west
[8]
6.
Calculate the weight (in Newton’s), assuming gravity = 10N/kg, of
(a) A girl of mass 40 kg
[3]
(b) A car of mass of 1 tonne
[3]
(c) A pin of mass 300 mg
[3]
- 12 (d) The density of air is 1.3 kg/m3. What mass of air is contained in a room
measuring 2.5m x 4m x 10m?
[4]
Total Marks[13]