Question # 1

The magnitude of momentum of an object is doubled. the kinetic energy of the object will

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Double

Increase to four times

Reduce to one half

Remain the same

A ball is thrown downward with an initial velocity, its.

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Ek increases and Ep decreases

Ek decreases and Ep increases

Both Ek and Ep increases

Both Ek and Ep decreases

If a car doubles its speed, its kinetic energy will be

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Increased to four times

The same

Doubled

Increased to the three times

A 4 kg body is thrown vertically upward fromt he gorund with a velocity of 5 ms-1. If frictin is neglected tis kinetic energy just before hitting the ground is.

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25 J

100 J

50 J

75 J

The unit of work or energy joule is equal to...............

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Newton metre

Horsepower

Watt metre

Newton second

One unit of horsepower is equivalent

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716 W

746 W

736 W

756W

A Joule can also be written as.

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kgms^-2

kgms^-1

kgms^-2S^-2

kgms^-2S^-3

A bullet of mass 0.05 kg has a speed of 300 ms-1. Its kinetic energy will be.

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2250 J

4500 j

1500 J

1125 J

The SI Unit of Power is

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Watt

Joule

Newton

Second

A ball weighing 50 N is lifted to a height of 5 metre. The potential energy stored in it is.

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25 J

250 J

55 J

45 J

What is the power utilized when 100 J of work is done in 5 s.10 W

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10 W

500 W

20 W

105 W

Which of the following is not renewable eergy soruce.

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Fossil fuels

Hydroelectric energy

Wind energy

Solar energy

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Physics 9th Class English Medium Unit 5 Online Test MCQs With Answers

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