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When a force acts on a body, its speed n...

When a force acts on a body, its speed necessarily changes.

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  1. If the acceleration of an object is zero for a period, it cannot chang...

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  2. Accelerations of two objects are 2.0 m//s^2 and 4.0 m//s^2 at an insta...

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  3. When a force acts on a body, its speed necessarily changes.

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  4. Forces can only be applied by living bodies.

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  5. When you hold a bucket of water, you apply an upward force on the buck...

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  6. In action-reaction pair forces, action force acts before the reaction ...

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  7. Equal forces acting on two different bodies always produce the same ac...

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  8. When a steel rod is immersed in water, the force exerted by the water ...

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  9. When a plastic rod floats in water, the force exerted by the water on ...

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  10. When a plastic rod is completely immersed in water, the force exerted ...

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  11. According to the principle of conservation of energy, it the kinetic e...

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  12. A stone hits a glass plate, which breaks. When this happens, the densi...

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  13. The pitch of sound is measured in hertz.

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  14. A 2-kHz sound will spread less around the edges of a cardboard as comp...

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  15. A louder sound bends more more around the edges than a less-loud sound...

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  16. The allowed limit of arsenic in drinking water is 0.00005 grams per li...

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  17. The radius of a hydrogen atom is 5.3xx 10^(-11)m. Convert this into a ...

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  18. Convert 1 yard into metres.

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  19. Convert 100 square yards into square metres.

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  20. Delhi and chicago are almost diametrically opposite on the earth. If s...

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