Work, Energy and Power-Kinetic Energy (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 4 - 5 of 5

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Question number: 4

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

A ball moving with a speed of 9 m/s strikes with an identical stationary ball such that after the collision the direction of each ball makes an angle of 30° with the original line of motion. Find the speeds of the two balls after the collision. Is the kinetic energy conserved in this collision process?

Choices

Choice (4) Response

a.

6 √3 m/s, yes

b.

0, yes

c.

6 √3 m/s, no

d.

3 √3 m/s, no

Question number: 5

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

A bullet is fired from the gun. The gun recoils, the kinetic energy of the recoil shall be

Choices

Choice (4) Response

a.

double that of the kinetic energy of the bullet

b.

Equal to the kinetic energy of the bullet

c.

less than the kinetic energy of the bullet

d.

greater than the kinetic energy of the bullet

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