Mathematics, 06.03.2020 04:51, kiah25

10. An archery arrow is shot with a speed of 45 m/s at an angle of 10°. How for

horizontally can the arrow travel before hitting a target at the same height

from which it was released?

Answers: 2

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Answers

answered: kcarstensen59070

The horizontal distance travelled by an arrow is 70.6 m.

Step-by-step explanation:

Given : An archery arrow is shot with a speed of 45 m/s at an angle of 10°.

To find : How for horizontally can the arrow travel before hitting a target at the same height from which it was released?

Solution :

The expression for the range of the projectile motion is

$R=\frac{V^2\sin 2\theta}{g}$

Where, the velocity of an arrow is V = 45 m / s

The angle of release of an arrow is $\theta=10^\circ$

The acceleration due to gravity is g =9.81 m/s²

Substitute the values,

$R=\frac{45^2\sin 2(10)}{9.81}$

$R=\frac{2025\sin (20)}{9.81}$

$R=70.6\ m$

Therefore, the horizontal distance travelled by an arrow is 70.6 m.

answered: Guest

(0,,,0)

step-by-step explanation:

the table of x and y values is shown in the attached pic(part of question)

we have to decide according that graph

given points are (0, 0) (–1, 0), (2, 0)

when we graph these points on graph they show an increasing line as shown in the attached pic

answered: Guest

hello!

to begin with, we're given that on earth, a rock weighs 20 pounds, and while on jupiter, that same rock weighs 42 pounds. now, we're trying to find the weight of a rock that weighs 10.5 pounds on earth, on jupiter.

to solve this, first, set up a proportion, cross-multiply, and solve it algebraically.

setting up the proportion is the hardest and the most confusing part of the problem, but it's simple.

if on earth, the rock weighs 20 lbs, and on jupiter it weighs 42 lbs, our first part of our proportion is 20/42 lbs. the second part has to be equal to each other. this means that 10.5 has to be on the numerator of the fraction, and x, the value we're trying to find, has to be on the denominator. remember that the rock weighs 10.5 lbs on earth, and we're trying to find the weight of it on jupiter (which is x).

20/42 = 10.5/x

next, you would cross-multiply.

20x = 42(10.5)

20x = 441

now, solve it algebraically by using division.

x = 22.05 lbs

this can be rounded to 22.1 lbs.

therefore, the weight of the rock on jupiter is 22.1 lbs, the fourth choice.

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10. An archery arrow is shot with a speed of 45 m/s at an angle of 10°. How for

horizont...