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- 1. Multiple Choice
1. What does the Newton's third law say?
For each action, there is an equal and opposite reaction that cancels it.
For each action , there is an equal and opposite reaction.
Resultant force is the product of mass and acceleration of a body.
An object in motion continues in straight line unless acted on by external force.
- 2. Multiple Choice
2. Define acceleration
Acceleration is the change in deplacement per unit time
Acceleration is the change in speed per unit time
Acceleration is the rate of change of velocity.
Acceleration is how Mr Ng feels when marks the prelim paper.
- 3. Multiple Choice
3. Stable equilibrium is
when a body returns to its original position after being moved.
when a body returns to its original position after being displaced slightly.
when a body does not returns to its original position after being moved.
when a body topples after being moved.
- 4. Multiple Choice
4. Atmospheric pressure is
101000 Pa at sea level.
101000 Pa at 4 floor in 4E1 classroom.
101000 Pa at Mt Everest.
120000 Pa at sea level.
- 5. Multiple Choice
- Energy is
how much starbucks drink you can finish in 1 hour.
the capacity to do work.
the power per unit time.
rate of change of work done.
- 6. Multiple Choice
6. Thermal equilibrium is when
there are no net flow of thermal energy between two bodies.
there are no net flow of thermal energy in a body.
there is flow of thermal energy between a bowl of noodle and air.
there is flow of thermal energy between two bodies.
- 7. Multiple Choice
7. Kinetic model of matter states that
matter is made up of tiny particles.
all matter is made of molecules that are constantly vibrating.
all matter is made of particles have kinetic energy only.
all matter is made of tiny particles that are always in continuous random motion.
- 8. Multiple Choice
8. Define density
Density is the mass per unit volume of a liquid only.
Density is the change in mass per volume of a substance.
Density is the mass per unit volume of a gas only.
Density is the mass per unit volume of a substance.
- 9. Multiple Choice
9. Define wavelength.
Wavelength is the distance between two crests of a wave.
Wavelength is the distance between two neighbouring crests of a wave.
Wavelength is the distance between one crest and one trough.
Wavelength is the number of waves generated when Sizhuang jumps into a swimming pool.
- 10. Multiple Choice
10. Define Lenz's Law.
Lenz's law state that the induced emf is always such that its magnetic effect opposes the motion producing it.
Lenz's law state that the direction of the induced emf is always such that its magnetic effect opposes the motion producing it.
Lenz's law state that the magnitude of the emf induced is directly proportional to the rate of change of magnetic flux in the circuit.
Lenz's law state that the magnitude of the emf induced is directly proportional to the magnetic flux in the circuit.
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