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A particle of mass 100 g is thrown verti...

A particle of mass `100 g` is thrown vertically upwards with a speed of `5 m//s`. The work done by the force of gravity during the time the particle goes up is

A

1.25 J

B

0.5 J

C

-0.5 J

D

-125 J

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SL ARORA-Work, Energy and power-EXERCISE
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  2. An athlete in the Olympic gamed covers a distance of 100 m in 10 s. Hi...

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  3. A particle of mass 100 g is thrown vertically upwards with a speed of ...

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  4. A ball whose kinetic energy is E , is projected at an angle of 45(@) t...

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  5. A particle is projected at 60(@) to the horizontal with a kinetic ene...

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  6. A particle moves in a straight line with retardation proportional to i...

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  7. The potential energy of a 1 kg particle free to move along the x- axis...

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  8. Consider the following two statements: A. Linear momentum of a syste...

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  9. A spherical ball of mass 20kg is stationary at the top of a hill of he...

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  10. A uniform chain of length 2 m is kept on a table such that a length of...

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  11. A mass of M kg is suspended by a weightless string. The horizontal for...

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  12. A spring of spring constant 5 xx 10^(2) Nm is streched initially by 5 ...

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  13. A spring of force constant 800N//m has an extension of 5cm. The work d...

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  14. A 2 kg block slides on a horizontal floor with a speed of 4 m/s. It st...

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  15. A body of mass m, accelerates uniformly from rest to V(1) in time t(1)...

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  16. A body is moved along a straight line by a machine delivering constant...

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  17. If mass-energy equivalence is taken into account , when water is coole...

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  18. A bomb of mass 16kg at rest explodes into two pieces of masses 4 kg an...

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  19. A block of mass 0.50 kg is moving with a speed of 2.00 m/s on a smoot...

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  20. A mass m moves with a velocity v and collides inelastically with anoth...

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