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
Slav-nsk [51]
3 years ago
9

A ball is kicked from the ground with an initial speed v0 at an angle θ above the horizontal. Which of the following best descri

bes the magnitudes of the velocity and acceleration of the ball when it reaches the highest point of its trajectory?
Physics
1 answer:
adoni [48]3 years ago
5 0

Answer:

Explanation:

velocity of projection = vo

angle of projection = θ

When the ball is at maximum height, its vertical component of velocity is zero, So it has only the horizontal component of velocity at highest point.

velocity at highest point = vo Cos θ

The acceleration acting on the ball is only the acceleration due to gravity which always acts vertically downward.

So, teh acceleration of the ball at the highest point is g.

You might be interested in
An instrument used to detect a static electric charge is called an
Eddi Din [679]
It is B. false that an instrument used to detect a static electric charge is called an ammeter. It is actually called an electroscope. Ammeter measures current. 
7 0
3 years ago
Read 2 more answers
Find the mass of an object on planet F if its weight is 650 N (g = 13m/s^2)
Andrew [12]

Answer:

the object's mass is 50 kg

Explanation:

We use Newton's second law to solve for the mass:

F = m * a , then   m = F / a

In our case, the acceleration is the gravitational acceleration on the planet, and the force is the weight of the object on the planet. So we get:

m = w / a = 650 N / 13 m/s^2 = 50 kg

Then, the object's mass is 50 kg.

5 0
2 years ago
The electric field in a particular thundercloud is 3.8 x 105 N/C. What is the acceleration (in m/s2) of an electron in this fiel
Svetradugi [14.3K]

Answer:

Answer:

6.68 x 10^16 m/s^2

Explanation:

Electric field, E = 3.8 x 10^5 N/C

charge of electron, q = 1.6 x 10^-19 C

mass of electron, m = 9.1 x 10^-31 kg

Let a be the acceleration of the electron.

The force due to electric field on electron is

F = q E

where q be the charge of electron and E be the electric field

F = 1.6 x 10^-19 x 3.8 x 10^5

F = 6.08 x 10^-14 N

According to Newton's second law

Force  = mass x acceleration

6.08 x 10^-14 = 9.1 x 10^-31 x a

a = 6.68 x 10^16 m/s^2

Explanation:

8 0
3 years ago
We can detect 21-cm emission from other galaxies as well as from our own Galaxy. However, 21-cm emission from our own Galaxy fil
amid [387]

Answer:

Explanation:

Galaxies are in constant motion with respect to each other . For example Andromeda galaxy is approaching our galaxy ( milky way ) at about 110 km /s . So we will observe blue shift in the spectrum of radiation coming from  this galaxy . In this way, we can distinguish between radiation coming from our galaxy and that coming from other galaxy . Spectrum of radiation coming from other galaxy must  have either red or blue  shift .

6 0
3 years ago
In the diagram, q1, q2, and q3 are in a straight line.
schepotkina [342]

Answer:

did anyone figure it out

Explanation:

please help

3 0
2 years ago
Other questions:
  • Which of the following statements best supports the idea that science strives for objectivity?
    9·2 answers
  • A rocket passes you at a speed of 0.85c, and you measure its length to be 35.0 m. What is its measured length when at rest?
    13·1 answer
  • How is an image produced by a plane mirror different than an image produced by a convex mirror
    14·2 answers
  • Many firms develop a formal _____ to answer the question: who is your target market and how do you plan to reach them?
    6·1 answer
  • Why do the stars appear to rotate around Polaris?
    13·2 answers
  • Meg has two glasses of grape juice. Glass A has 80 grams of juice at 30 °C. Glass B has 80 grams of juice at 50 °C.
    10·1 answer
  • A shopper walks eastward 5.4 meters, then walks westward 7.8 meters eastward
    13·1 answer
  • Power can be defined as?
    5·1 answer
  • What is the first law of motion?​
    13·2 answers
  • What is the meaning of the safety symbol shown below?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!