When you first learn some information, the first place it goes in your brain is to your short-term memory. So, you read something, or hear something, and it stays in your short-term memory for a little while. If you don't hear it again, or that information doesn't get repeated, it is likely to disappear from your memory - you will forget it. However, the more you repeat that information, the more likely it is that it will be remembered, that is, it will enter your long-term memory and stay there for a long time.
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Answer:
III. A baseball is traveling at 38 m/s when it hits a wall and bounces away from the wall at -38 m/s
Explanation:
The change in momentum of the baseball is a function of its change in velocity. And can be shown mathematically as;
∆p = m (∆v)
Where ∆p change in momentum
m mass of baseball
∆v change in velocity
Which implies that the higher the change in velocity of the baseball the higher the change in momentum.
I) ∆v = 38 - 0 = 38m/s
II) ∆v = 0 - 38 = -38m/s
III) ∆v = -38-38 = -76m/s
Therefore the third event have the highest change in velocity and thus have the highest change in momentum.
D Elements are the building blocks of matter
The vertical component is B) 7.9 m/s
Explanation:
A vector can be resolved into its horizontal and vertical components. The horizontal and the vertical components form the sides of a right triangle, in which the resultant corresponds to the hypothenuse, so we can use Pythagorean's theorem:
where
R is the resultant vector
Rx is the horizontal component
Ry is the vertical component
In this problem, we have:
R = 12 m/s is the resultant vector
Rx = 9 m/s is the horizontal component
Solving the formula for Ry, we find the vertical component:
Learn more about vector components:
brainly.com/question/2678571
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