Answer:
<h2>a) positivo.</h2>
Explanation:
The question is
The work done by gravity during a projectile decline is:
a) Positive.
b) Negative.
c) Zero.
d) Depends on y-axis direction.
e) Depends on x-axis direciton.
Remember that Work is defined as the energy needed to move an object. Mathematically, it's the product between the force exerted and the displacement. That means if we don't have any displacement, then there's no work.
In this case, we are talking about the work done by the gravity force. When a projectile goes down, it's because of the gravity force, which means it can't be zero.
Specifically, the work done by gravity is positive, because when the projectile is going down, it's getting closer to the atracttive mass, which is Earth.
Therefore, the right answer is a.
The perfect elastic Collision ball will hit the door first because the clay is heavier and will take more time
Errrrr, it has 80.
80 is the correct answer
Answer:
this is a simple application of Newton's 2nd Law: F = ma.
F = 0.023(25)
So,
F =0.575 N.
Therefore
The answer is A.
If rounded up/off.
Explanation:
HOPE IT HELPS.
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