Respuesta :
First, determine how much of that 49m/s applies towards vertical velocity. So just multiply by the sine of 30. Giving
sin(30) * 49 m/s = 0.5 * 49 m/s = 24.5 m/s
Now the arrow will continue to climb until it's vertical velocity reaches 0. And since the attraction due to gravity is 9.8 m/s^2, that will be
24.5 m/s / 9.8 m/s^2 = 2.5 s
Finally, the distance an object travels under constant acceleration is given by the equation
d = 0.5 A T ^2
where
d = distance
A = acceleration
T = time.
So substitute the known values into the equation and solve for d.
d = 0.5 9.8 m/s^2 (2.5 s)^2
d = 4.9 m/s^2 * 6.25 s^2
d = 30.625 m
sin(30) * 49 m/s = 0.5 * 49 m/s = 24.5 m/s
Now the arrow will continue to climb until it's vertical velocity reaches 0. And since the attraction due to gravity is 9.8 m/s^2, that will be
24.5 m/s / 9.8 m/s^2 = 2.5 s
Finally, the distance an object travels under constant acceleration is given by the equation
d = 0.5 A T ^2
where
d = distance
A = acceleration
T = time.
So substitute the known values into the equation and solve for d.
d = 0.5 9.8 m/s^2 (2.5 s)^2
d = 4.9 m/s^2 * 6.25 s^2
d = 30.625 m
The height achieved by the arrow is of 30.62 m.
Given data:
The angle of inclination with Horizontal is, [tex]\theta =30^{\circ}[/tex].
The initial velocity of arrow is, u = 49 m/s.
Since, the inclination is given with respect to the horizontal, then the horizontal component of initial velocity is,
[tex]u' = u \times sin \theta\\\\u' = 49\times sin30\\\\u'=24.5 \;\rm m/s[/tex]
So, using the alternate expression for the horizontal component of initial velocity as,
[tex]g = \dfrac{u'}{t}[/tex]
Here, g is the gravitational acceleration.
Solving as,
[tex]9.8 = \dfrac{24.5}{t}\\\\\\t = \dfrac{24.5}{9.8}\\\\\\t = 2.5 \;\rm s[/tex]
Now, we can use the second kinematic equation of motion to find the height achieved by the arrow as,
[tex]h = u''t+\dfrac{1}{2}gt^{2}\\\\h = (0 \times t) +\dfrac{1}{2} \times 9.8 \times 2.5^{2}\\\\h = 30.62 \;\rm m[/tex]
Thus, we can conclude that the height achieved by the arrow is of 30.62 m.
Learn more about the kinematic equation of motion here:
https://brainly.com/question/14355103