The vertical velocity of projectile y is changing, and the horizontal velocity of projectile x is constant because the projectile motion occurs due to gravity.
<h3>
Describes the motion of the projectiles?</h3>
Projectile motion is a type of motion of an object that is projected vertically upward into the air and moving due to gravity and it also moves horizontally into the air moving independently of gravity.
So we can conclude that The vertical velocity of projectile y is changing, and the horizontal velocity of projectile x is constant because the projectile motion occurs due to gravity.
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Answer:
B. less than mg
Explanation:
A person's weight changes as he rides an elevator at a constant velocity. If the elevator is moving downward,<u> the person's weight becomes lesser.</u> He is considered to be in "free fall" due to <em>gravity.</em> However, the opposite happens when the elevator goes upward. The person will feel heavier because he is going against gravity. This means his weight is more than his actual weight. If the person will stand on an elevator that doesn't move, his weight will just be the same. All of these is due to <em>Newton's Second Law of Motion</em> where an object's acceleration relies on its <em>force</em> and<em> mass.</em>
What is the picture of the cards that Mendeleev put on the notes?
Answer: 74.8m
Explanation:
We have the vector defined by:
r = 101m
θ = 42.2°
When we want to write this as rectangular components, we have that:
x = r*cos(θ)
y = t*sin(θ)
this is because we can construct a triangle rectangle, where the module of the vector is the hypotenuse, the x component is the adjacent cathetus and the y component is the opposite cathetus.
Then, here we have that the x component is
x = 101m*cos(42.2°) = 74.8m
