
Grade 9/ 1st term exam
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Physics
9th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Vernier calipers read to one tenth of a millimetre.
What reading shows this precision?
3.3 cm
3.31 cm
3.310 cm
3.312 cm
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which list contains only scalar quantities?
Acceleration, displacement, mass
Acceleration, distance, speed
Displacement, mass, velocity
Distance, mass, speed
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A room measures 4.0m × 3.0m × 2.0m.
The density of the air in the room is 1.3kg/m³.
What is the mass of air in the room?
0.054 kg
18 kg
24 kg
31 kg
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A man weighs 600N. He runs up a staircase of total height 4.0 m in 3.0 s.
How much useful power is needed to do this?
450 W
800 W
2400 W
7200 W
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A block of metal has a mass of 2.0 kg. Its specific heat capacity is 800J/(kg⁰C).
The block is supplied with 2400 J of energy. What is the rise in temperature?
0.17 ⁰C
0.67 ⁰C
1.5 ⁰C
6.0 ⁰C
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The efficiency of an electrical generator is 65%.
Which useful output can be expected if the energy input to the generator is 12 kJ?
4.2 kJ
7.8 kJ
19 kJ
780 kJ
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A 2 kg mass is moving at constant speed. The kinetic energy of the mass is 400 J. What is the speed of the mass?
0.4 m/s
20 m/s
200 m/s
400 m/s
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