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15 questions
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- 1. Multiple Choice
Passengers are rushed backward when a car stops suddenly.
True
False
- 2. Multiple Choice
Friction is a property of an object has to resist the change of its state.
True
False
- 3. Multiple Choice
Slowing down of a moving bicycle on a road by brakes is due to its inertia
True
False
- 4. Multiple Choice
Friction prevents feet from slipping on roads during walking.
True
False
- 5. Multiple Choice
Friction causes a great loss of electric energy because this energy is changed into heat energy.
True
False
- 6. Multiple Choice
Car tyres are covered with a very smooth substance to increase the friction with roads.
True
False
- 7. Multiple Choice
Friction always opposes motion.
True
False
- 8. Multiple Choice
Lubricants and oils have no effect on friction.
True
False
- 9. Multiple Choice
Friction may occur between the surface of a solid object and air.
True
False
- 10. Multiple Choice
Car brakes are from applications on friction forces.
True
False
- 11. Multiple Choice
There are forces inside amoeba to keep it survival.
True
False
- 12. Multiple Choice
Heart muscle contraction and relaxation is one of the forces inside living systems.
True
False
- 13. Multiple Choice
Safety belt in cars work on increasing the forces of inertia.
True
False
- 14. Multiple Choice
Contraction and relaxation of body muscles help in moving.
True
False
- 15. Multiple Choice
Liquids transport through pores and the walls of cells from the higher concentration to the lower one.
True
False
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