Middle School

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What is the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? Round to the nearest hundredth.

A. 35.67 m/s
B. 34.78 m/s
C. 37.43 m/s
D. 36.5 m/s

Answer :

Answer:

B. 34.78 m/s

Explanation:

The momentum of an object is given by:

[tex]p=mv[/tex]

where

p is the momentum

m is the mass of the object

v is its velocity

For the object in this problem, we have

p = 4000 kg m/s

m = 115 kg

So, we can solve the equation to find v, the velocity:

[tex]v=\frac{p}{m}=\frac{4000 kg m/s}{115 kg}=34.78 m/s[/tex]

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