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evablogger [386]
3 years ago
7

7. A pool cue ball moving at 2.1 m/s east collides in a straight line with the eight ball at rest. Find the velocity of the eigh

t ball after the collision if momentum is conserved and
A. the cue ball stops. (5 points)
B. the cue ball continues on in the same direction at 0.10 m/s. (5 points)
C. the cue ball continues on in the same direction at 0.70 m/s. (5 points)
Physics
2 answers:
Hitman42 [59]3 years ago
8 0

the answer is letter B


MArishka [77]3 years ago
6 0
I think the answer is C the cue ball con....
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Answer:

The initial velocity was U=22.14m/s

Explanation:

Step one :

Applying the third equation of motion

v² = u²+ 2as

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U =initial velocity

a= acceleration due to gravity

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Step two :

V= 0

a= 9.81m/s²

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U=?

Step three :

Substituting into the equation we have

0²=U²+2*9.81*25

0=U²+490.5

U²=-490.5

U=√490.5

U=22.14m/s

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Answer:

<u>Given</u><em> </em><em>-</em><em> </em><u>M</u><u> </u><u>=</u><u> </u>20 kg

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