Work, Energy and Power-Potential Energy (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 9 - 11 of 11

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Question number: 9

» Work, Energy and Power » Potential Energy

MCQ▾

Question

A particle of mass 4 m which is at rest explodes into three fragments two of the fragments each of mass m are found to move each with a speed v making an angle 90° with each other. The total energy released in this explosion is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 10

» Work, Energy and Power » Potential Energy

MCQ▾

Question

A tennis ball dropped from a height of 7 m rebounds only 1.6 f meter after hitting the ground. What fraction of energy is lost in the impact?

Choices

Choice (4) Response

a.

2.45

b.

0.466

c.

1.26

d.

0.771

Question number: 11

» Work, Energy and Power » Potential Energy

MCQ▾

Question

A tennis ball dropped from a height of 6 m rebounds only 2.1 f meter after hitting the ground. What fraction of energy is lost in the impact?

Choices

Choice (4) Response

a.

0.65

b.

0.5

c.

0.466

d.

1.26

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