1. an object which is moving at a constant speed has momentum.
2. two objects of different mass are moving at the same speed the more massive object will have the greatest momentum.
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Answers
Answer:
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Correct answers are:-
Explanation:
a. TRUE - Momentum is a vector quantity. Like all vector numbers, the momentum of a matter is not entirely interpreted until the direction of the momentum is specified. Momentum, like other vector quantities, is subject to the laws of vector operations.
b. FALSE - Joule is the unit of work and energy. kg m/s = basic unit of momentum.
c. FALSE - If an object is in motion, it has momentum. The inertia of an object is obtained by having mass. When that inertial motion is in motion, the object has momentum.
d. True - It's true. However, one must note that momentum does not necessarily require an object to have a constant motion.
e. FALSE - The direction of the momentum vector of an object is in the direction in which the object is moving. If an object is moving towards the east, then its momentum is towards the east. If the object is slowing down, its momentum is still east. Only its acceleration will be towards the west.
f. FALSE - To say that momentum is a conserved quantity is to say that if a system of objects can be assumed to be isolated from the effects of net external forces, then the total momentum of that system remains conserved. In the absence of external forces, the total momentum of a system does not change by collision. However, the momentum of an individual object changes as the momentum is transferred between the colliding objects.
g. Yes. TRUE - Momentum is calculated as the product of mass and velocity. As the speed of a matter rises, so does its velocity rises. As an outcome, an increasing speed leads to an increasing speed - a direct correlation.
h. TRUE - For the same speed (and thus velocity), a more huge object has a tremendous product of mass & velocity; Hence its speed is high.
i. FALSE: The momentum of a lesser mass object will be greater than the velocity of a more massive object. Momentum relies on 2 quantities that are mass & velocity. Both are equally important.
j. FALSE - When comparing the size of two momentum vectors, the direction is unimportant. The direction of any vector will never enter a size comparison.
k. TRUE - The velocity of objects with varying speeds also varies. For example, an object with a changing speed also has a variable momentum.