Answer:
1) suspicion and doubt
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Answer:
3.14 ×
× 2
Explanation:
Multiply 3.14 by 6 times 6 times 2
The momentum of an object is a measure of force that acts on the object for a given time
Using the assumed final velocity, the change in momentum is 40 kgm/s
<h3>How to calculate the change in momentum</h3>
The change in momentum of an object is calculated using:
![\Delta p =m\Delta v](https://tex.z-dn.net/?f=%5CDelta%20p%20%3Dm%5CDelta%20v)
Where:
- m represents the mass of the object
represents the change in velocity of the object
From the question, the mass of the box is 2 kg, and the box starts from rest.
This means that, the initial velocity is 0 m/s
The final velocity is not given. So, we make use of the following assumed value for the final velocity
v = 20 m/s
The equation then becomes
![\Delta p =m\Delta v](https://tex.z-dn.net/?f=%5CDelta%20p%20%3Dm%5CDelta%20v)
![\Delta p = m(v - u)](https://tex.z-dn.net/?f=%5CDelta%20p%20%3D%20m%28v%20-%20u%29)
Substitute known values
![\Delta p = 2(20 - 0)](https://tex.z-dn.net/?f=%5CDelta%20p%20%3D%202%2820%20-%200%29)
![\Delta p = 40](https://tex.z-dn.net/?f=%5CDelta%20p%20%3D%2040)
Hence, the change in momentum is 40 kgm/s
Read more about momentum at:
brainly.com/question/402617