The speed of the ball 0.60 seconds after it is released is 6.8 m/s.
Newton's law of motion is given by:
v = u + gt
where v is the final velocity, u is the initial velocity, g is the acceleration due to gravity and t is the time.
Given that:
u = 0.8 m/s, g = 10 m/s², t = 0.6s. Hence:
v = 0.8 + 10(0.6)
v = 6.8 m/s
Therefore the speed of the ball 0.60 seconds after it is released is 6.8 m/s.
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Answer:
For close to 50 years, educators and politicians from classrooms to the Oval Office have stressed the importance of graduating students who are skilled critical thinkers.
Content that once had to be drilled into students’ heads is now just a phone swipe away, but the ability to make sense of that information requires thinking critically about it. Similarly, our democracy is today imperiled not by lack of access to data and opinions about the most important issues of the day, but rather by our inability to sort the true from the fake (or hopelessly biased).
We have certainly made progress in critical-thinking education over the last five decades. Courses dedicated to the subject can be found in the catalogs of many colleges and universities, while the latest generation of K-12 academic standards emphasize not just content but also the skills necessary to think critically about content taught in English, math, science and social studies classes.
Explanation:
Answer: C An unfulfilled pledge by a political leader
Explanation:
The author refers to President Obama´s promise to provide deportation assistance for families, which he hasn´t fulfilled.
As the author recalls her parents being deported by immigration officers without any regard for the union of the family or her safety as a young teenager, she highlights the President´s responsibility for bringing a solution to a problem that has had families greaving over lost family members for too long.
Answer:there is a vgraph so where it says 4 at the bottom then go under to -2 then ur done.
Explanation:
The magnitude and direction of the angular momentum about the center of the disk is 0.996 kgm²/s.
<h3>Angular acceleration of the disk</h3>
The angular acceleration of the disk is determined by applying the principle of conservation of angular momentum as shown below;
Fr = Iα
α = Fr/I
Where;
- I is the moment of inertia of the solid disk
I = ¹/₂MR²
I = ¹/₂ x (0.5) x (0.08)²
I = 1.6 x 10⁻³ kgm²
<h3>Final angular velocity of the disk</h3>
ωf = ωi + αt
ωf = 45 + (1925 x 0.3)
ωf = 622.5 rad/s
<h3>Angular momentum</h3>
L = Iω
L = (1.6 x 10⁻³) x (622.5)
L = 0.996 kgm²/s
Thus, the magnitude and direction of the angular momentum about the center of the disk is 0.996 kgm²/s.
The complete question is below:
A uniform solid disk with radius 8 cm has mass 0.5 kg (moment of inertia I = (1/2)MR²). A constant force 14 N is applied as shown. At the instant shown, the amount of string that has wound off the disk is d = 22 cm, and the angular velocity of the disk is 45 radians/s into the page.
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