1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
levacccp [35]
3 years ago
9

A blue ball is thrown upward with an initial speed of 21.8 m/s, from a height of 0.9 meters above the ground. 2.7 seconds after

the blue ball is thrown, a red ball is thrown down with an initial speed of 10.4 m/s from a height of 26.6 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2.
Physics
1 answer:
worty [1.4K]3 years ago
3 0
I can think of two possible and logical questions for the problem given. First, you can calculate for the maximum height reached by the blue ball. Second, you can compute the length of time for the two balls to be at the same height. If so, the solution are as follows:

When the object is thrown upwards or when the object is dropped from a height, the only force acting upon it is the gravitational force. Because of this, it simplifies equations of motion.

1. For the maximum height, the equation is
H = v₀²/2g
where
v₀ is the initial speed
g is the acceleration due to gravity equal to 9.81 m/s²

For the blue ball, v₀ = 21.8 m/s. Substituting the values:
H = (21.8 m/s)²/2(9.81m/s²)
H = 24.22 m
The maximum height reached by the blue ball is 24.22 m + 0.9 = 25.12 m.

2. For this, you equate the y values of both balls:

y for red ball = y for blue ball
v₀t + 0.5gt² = v₀t + 0.5gt²
(10.4 m/s)t + 0.5(9.81 m/s²)(t²) + 26.6 m = (21.8 m/s)t + 0.5(9.81 m/s²)(t²) + 0.9 m
Solving for t, 
t = 2.25 seconds

Thus, the two balls would be at the same height after 2.25 seconds.
You might be interested in
A 7.5 kg block is placed on a table. if it's bottom surface area is 0.6m2, how much pressure does the block exert on the tableto
xeze [42]
The answer to this is B.
3 0
3 years ago
Explain how high-pressure and low pressure systems are different
Studentka2010 [4]
Low pressure has a bit less of a function than high pressure, high pressure is more useful in certain terms
5 0
2 years ago
. An object has a position given by ~r(t) = [3.0 m − (4.00 m/s)t]ˆı + [6.0 m − (8.00 m/s2 )t 2 ]ˆ , where all quantities are in
kupik [55]

Answer:

(c) 16 m/s²

Explanation:

The position is r(t) = [3.0 \text{ m} - (4.00 \text{ m/s})t]\hat{i} + [6.0 \text{m} - (8.00 \text{ m/s}^2 )t^2 ]\hat{j}.

The velocity is the first time-derivative of <em>r(t).</em>

<em />v(t) = \dfrac{d}{dt}r(t) = -4.00\,\hat{i} -16t\,\hat{j}<em />

The acceleration is the first time-derivative of the velocity.

a(t) = \dfrac{d}{dt} v(t) = -16\hat{j}

Since <em>a(t)</em> does not have the variable <em>t</em>, it is constant. Hence, at any time,

a = -16\hat{j}

Its magnitude is 16 m/s².

4 0
2 years ago
Will give brainliest to right answer!
viva [34]
The correct answer is D.
8 0
3 years ago
Use the diagram below modeling a football kicked from a horizontal surface B
djyliett [7]
B is the correct one
5 0
2 years ago
Read 2 more answers
Other questions:
  • Paragraph about cell wall
    15·2 answers
  • weather is the day-to-day conditions of an area including A. temperature B. Wind Speed C. humidity D. all of the above
    7·2 answers
  • To determine the trajectory of the movement of a material point in the xOz plane that is subjected simultaneously to oscillation
    10·1 answer
  • Under what conditions would a rope remain in equilibrium during a tug of war
    9·2 answers
  • Give two ways in which archaea are different from bactria
    7·1 answer
  • What is refractive index​
    12·1 answer
  • Which statement best describes wavelength
    5·2 answers
  • Two identical blocks are connected to opposite ends of a compressed spring. the blocks initially slide together on a frictionles
    5·1 answer
  • Why do you think silicon is used in electronic components
    14·2 answers
  • a planes average speed between two cities is 600 km/hr. if he takes 2.5 hrs. how far does the plane fly
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!