How can a heavy moving van have the same momentum as a small motorcycle?
1 answer:
Hello there!
The formula for momentum is
.
p is momentum, m is mass, and v is velocity.
The mass of a heavy moving van will be much greater than the mass of a motorcycle, so how can they have the same momentum?
They can have the same momentum if the velocity of the moving van is less than the velocity of the motorcycle, or if the velocity of the motorcycle is greater than the moving van (same thing but differently worded)
Let the mass of the moving van be greater than the mass of the motorcycle by a factor of k. In order for the two to have the same momentum, the velocity of the motorcycle must be greater than the velocity of the moving van by the same factor, k.
Hope this helps! :)
The formula for momentum is
p is momentum, m is mass, and v is velocity.
The mass of a heavy moving van will be much greater than the mass of a motorcycle, so how can they have the same momentum?
They can have the same momentum if the velocity of the moving van is less than the velocity of the motorcycle, or if the velocity of the motorcycle is greater than the moving van (same thing but differently worded)
Let the mass of the moving van be greater than the mass of the motorcycle by a factor of k. In order for the two to have the same momentum, the velocity of the motorcycle must be greater than the velocity of the moving van by the same factor, k.
Hope this helps! :)
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Answer:
Explanation:
Torque is defined as the cross product between the position vector ( the lever arm vector connecting the origin to the point of force application) and the force vector.
Due to the definition of cross product, the magnitude of the torque is given by:
Where is the angle between the force and lever arm vectors. So, the length of the lever arm (r) is minimun when
is equal to one, solving for r: