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
kotegsom [21]
3 years ago
10

An object thrown straight up a distance ymaxymax. After tt seconds, it falls back and is caught again, just as it reaches the he

ight from which it was thrown. Claudia says its average velocity was zero, and Hossein says its average speed was 2ymaxt2ymaxt . What would you say to help them out?
Physics
1 answer:
Mazyrski [523]3 years ago
6 0

Answer:

Avg.velocity=(Δy/ Δt)  =(net displacement/ total time for journey)

Δy = 0

Δt = t

so avg. velocity = 0/t =0

Avg. speed =(total distance traveled/ total time for journey)

total distance = up +down = Ymax+Ymax= 2 Ymax

total time = t

avg. speed = 2 Ymax/t

Explanation:

Since there is no net displacement from the original position,velocity is zero. Claudia is right!

while it covered some distance in time t so its speed is not as qouted by Hossien

You might be interested in
How is the direction of light changed when it travels from an optically denser medium to an optically rarer medium????? please a
ANTONII [103]

Answer:

The light bends away from the normal

Explanation:

We can solve the problem by using Snell's law:

n_1 sin \theta_1 = n_2 sin \theta_2

where:

n_1 is the index of refraction of the first medium

n_2 is the index of refraction of the second medium

\theta_1 is the angle of incidence (angle between the incoming ray and the normal to the interface)

\theta_2 is the angle of refraction (angle between the outcoming ray and the normal to the interface)

We can rearrange the equation as

sin \theta_2 = \frac{n_1}{n_2}sin \theta_1

In this problem, light travels from an optically denser medium to an optically rarer medium, so

n_1 > n_2

Therefore, the term \frac{n_1}{n_2} is greater than 1, so

sin \theta_2 > sin \theta_1\\\rightarrow \theta_2 > \theta_1

which means that the angle of refraction is greater than the angle of incidence, and so the light will bend away from the normal.

4 0
3 years ago
A_ is a cut made through the wood
Cloud [144]

Answer:

i believe the answer is B only because i looked it up on g00gle so take what i say with a GRAIN of salt all puns intended

Explanation:

 

6 0
3 years ago
Read 2 more answers
Explain why the elements of the same group exhibit the same chemical behavior​
ElenaW [278]

Answer:

All the elements of a period have similar chemical properties because they have the same number of valence electrons in their outermost shell. Their atoms have the same number of electrons in the highest occupied energy level

4 0
3 years ago
Hydroelectric power plants can generate huge amounts of electricity. Which of these statements best describes the impact of a hy
Zarrin [17]
The best answer is that it reduces the level of ground water
7 0
2 years ago
Read 2 more answers
Are we real?Should we believe in hell and heaven?Should we take life seriously?Why do we feel like we are being pulled down from
nlexa [21]
Uhhhhh just sleep? Are you ok?
7 0
2 years ago
Read 2 more answers
Other questions:
  • Most stars are members of groups of two or more stars, called _____.
    8·1 answer
  • a student uses a simple machine to help lift a load.when 40N of input force is applied to the machine it is able to lift 160N .w
    10·1 answer
  • A car of mass m accelerates from speed v1 to speed v2 while going up a slope that makes an angle θ with the horizontal. The coef
    15·1 answer
  • What is the name of a scientist that studies the Movment of living things?
    8·1 answer
  • Which particle of the atom is the smallest and has the least mass?
    5·2 answers
  • PLEASE HELP!!!
    10·2 answers
  • Tomarrow last day of school
    10·1 answer
  • Describe how the movements of earth might affect the movement of air masses in North America
    7·2 answers
  • Sarah rides her horse with a constant speed of 12km/h. How far can she travel in 3 hours?
    12·1 answer
  • Please help as soon as possible! I will give Brainliest! I just need to know the answers to this diagram.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!