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Anna11 [10]
4 years ago
5

Is there any point on the trajectory where v⃗ and a⃗ are parallel to each other? if so, where?

Mathematics
1 answer:
DedPeter [7]4 years ago
6 0
In a projectile motion, there are two components: horizontal and vertical. The vertical component is in a uniformly accelerated motion. The motion is always directed downwards due to the force of gravity. The horizontal component (constant velocity) on the other hand must move in the horizontal axis. They can never be parallel on the trajectory. 

They can only by parallel during a free fall motion, wherein no change of horizontal direction occurs.
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What is f(x) when given the points (0,-5)?
Lunna [17]
F(x)=x-5
When you plug in 0 for x, y = -5 as we want it to, so it checks out :)

Hope this helps!
7 0
3 years ago
Rewrite the expression by combining like terms. 3y + 5x2 + 10x + 2x2 + 15x – 3y​
EleoNora [17]

Answer:

7x²+ 25x

Step-by-step explanation:

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3 years ago
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mamaluj [8]

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3 years ago
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Which of the following are lengths of the sides of a 30°-60°-90° triangle? A. 5√3, 15., 10√3 units B. 3, 4, and 5 units C. √3, 3
zaharov [31]

Answer:

A

Step-by-step explanation:

law of sine

c/sin(C) = b/sin(B) = a/sin(A)

with the sides and corresponding angles being always opposite.

sin(90) = 1

sin(30) = 0.5

c, the Hypotenuse, is the longest side in such a right-angled triangle.

c/1 = b/0.5

b = c×0.5 = c/2

so, one side has to be half the length of the longest side (Hypotenuse).

the only answer meeting that criteria is A.

the longest side is 10×sqrt(3) = 17.32...

the side half of that is 5×sqrt(3).

and Pythagoras for such a triangle is then

c² = (c/2)² + a²

c² = c²/4 + a²

so, a² = 3c²/4

c² = c²/4 + 3c²/4

therefore we can check also the third side

15² = 3×(5×sqrt(3))² = 3×25×3 = 3×75 = 225 = 15²

correct.

A is such a triangle.

5 0
2 years ago
Over 182 days of school each, school day last 7 hour how many hours are the students in school. thank you​
adelina 88 [10]

The students spend 1274 hours in school.

<h3>How to determine the number</h3>

From the information given, we have that:

  • There are 182 school days
  • Each school days take 7 hours

We can then say that, if takes 7 hours for each school day and there are 182 days, then the hours students spent in school is;

= 182 days × 7 hours

Multiply through

= 1274 hours

The students are in school for 1274 hours.

Hence, the students spend 1274 hours in school.

Learn more about word problem here:

brainly.com/question/13818690

#SPJ1

7 0
1 year ago
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