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
Agata [3.3K]
3 years ago
9

a volleyball is hit upward with an initial velocity of 7.5 m/s. calculate the displacement of the volleyball when its final velo

city is 2.2m/s upwad
Physics
1 answer:
Luden [163]3 years ago
7 0

Answer:

The displacement of the volleyball is 2.62 m

Explanation:

Given;

initial velocity of the volleyball, u = 7.5 m/s

final velocity of the volleyball, v = 2.2 m/s

displacement of the volleyball, d = ?

Apply the following kinematic equation;

v² = u² - 2gd

2gd = u² - v²

d = \frac{u^{2}-v^{2}  }{2g}\\\\d = \frac{7.5^{2}-2.2^{2}  }{2*9.8}\\\\d = 2.62 \ m

Therefore, the displacement of the volleyball is 2.62 m

You might be interested in
A centrifuge used in DNA extraction spins at a maximum rate of 7000rpm producing a "g-force" on the sample that is 6000 times th
defon

Answer:

A) a = 73.304 rad/s²

B) Δθ = 3665.2 rad

Explanation:

A) From Newton's first equation of motion, we can say that;

a = (ω - ω_o)/t. We are given that the centrifuge spins at a maximum rate of 7000rpm.

Let's convert to rad/s = 7000 × 2π/60 = 733.04 rad/s

Thus change in angular velocity = (ω - ω_o) = 733.04 - 0 = 733.04 rad/s

We are given; t = 10 s

Thus;

a = 733.04/10

a = 73.304 rad/s²

B) From Newton's third equation of motion, we can say that;

ω² = ω_o² + 2aΔθ

Where Δθ is angular displacement

Making Δθ the subject;

Δθ = (ω² - ω_o²)/2a

At this point, ω = 0 rad/s while ω_o = 733.04 rad/s

Thus;

Δθ = (0² - 733.04²)/(2 × 73.304)

Δθ = -537347.6416/146.608

Δθ = - 3665.2 rad

We will take the absolute value.

Thus, Δθ = 3665.2 rad

8 0
3 years ago
Describe the difference between distance, position, and displacement
nata0808 [166]

Answer:

Explanation:

<em>Position is the location of the object (whether it's a person, a ball, or a particle) at a given moment in time.</em>

<em>Displacement is the difference in the object's position from one time to another.</em>

<em>Distance is the total amount the object has traveled in a certain period of time.</em>

<em />

<em>I hope this helps!</em>

<em />

5 0
2 years ago
During science class, while studying mixtures, you mix together iron filings and sand. Your teacher challenges you to separate t
Lapatulllka [165]

Answer : Use a magnet to pull out the iron filings as they are attracted to a magnet

Explanation :  we use the magnet to separate the sand from the iron filing. Because the magnet has an attraction power.

We can say that we can use the magnet to attract the iron filings out of the mixture because iron is magnetic solid, but sand will not attract because sand is not magnetic solid.

So,  we use a magnet to pull out the iron filings as they are attracted to a magnet.

8 0
3 years ago
Read 2 more answers
Podrian ayudarme? Llevo dias intentando pero no se como 1. el profesor no explico
Paraphin [41]
You have to upload this in the area of mathematicians..!
8 0
3 years ago
What is 7.4 in it's simplest form?
Iteru [2.4K]
Assuming that you mean to ask <em>. . . "What is 7.4 </em><u><em>as a fraction</em></u><em> in simplest form</em>?"

7.4 = 7 and 4/10

4/10 can be reduced to 2/5

7 represents = (7*5)/5 = 35/5

so . .  7 + 4/10 = 35/5 + 2/5 = 37/5 (improper fraction in simplest form)
or
 . . . . 7 + 4/10 = 7 2/5 (mixed fraction in simplest form)
4 0
3 years ago
Other questions:
  • Compare the temperature of water as ice begins to form with the temperature of ice as it begins to melt
    10·1 answer
  • 5. An undisturbed soil sample has a wet density of 2.5 Mg/m3 when the water content is 25%. The specific gravity of the soil par
    6·1 answer
  • Which scenario do robes an interaction between two different spheres
    10·1 answer
  • 2) __________ are chemical messengers produced by the endocrine system and released into the bloodstream.
    9·2 answers
  • Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each other on a horizontal surface. Both balls travel with a consta
    12·2 answers
  • Question 4 Multiple Choice Worth 4 points)
    13·1 answer
  • A person’s blood type depends on the type of protein marker, called an , found on the cell membranes of the red blood cells.
    5·1 answer
  • A single paragraph can be selected by triple in the paragraph. ture or false​
    12·1 answer
  • A car starts from rest, then accelerates at 1.20 m/s2 for 7.00 s. It hits the brakes,
    8·1 answer
  • A 0.05 kg arrow is fired at a velocity towards a 1.2 kg apple. The arrow sticks in the apple and both move at 3.6
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!