What does Newton's second law state in terms of forces and acceleration?
WTF is a Kinetic Moment? (Rigid Body Dynamics)

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Physics
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9th - 10th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The sum of forces is equal to the mass times force.
The sum of forces is equal to the mass times displacement.
The sum of forces is equal to the mass times acceleration.
The sum of forces is equal to the mass times velocity.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can a car be analyzed in terms of kinetic forces?
By considering it as a single mass element.
By considering it as a collection of mass elements.
By ignoring its mass and only considering its velocity.
By only considering its external forces.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a kinetic moment analogous to?
A potential energy.
A gravitational force.
A static friction.
A kinetic force.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two components of acceleration in a mass element?
Translational and rotational acceleration.
Translational and angular acceleration.
Linear and circular acceleration.
Static and dynamic acceleration.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do translational acceleration components add up to zero in a wheel?
Because they are all in the same direction.
Because they cancel each other out due to symmetry.
Because they are not considered in kinetic moment calculations.
Because they are negligible compared to angular acceleration.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What additional term must be considered when calculating moments with translational acceleration?
The moment of inertia.
The cross product of mass and translational acceleration.
The angular velocity.
The sum of all forces.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When is the term 'R cross M times acceleration' used in moment calculations?
When the point of reference is the center of mass.
When the point of reference is not the center of mass.
When there is no translational acceleration.
When the object is at rest.
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