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
LiRa [457]
3 years ago
7

Which best describes the speed of the ball as it is thrown straight up into the air and comes back down

Physics
1 answer:
Andrews [41]3 years ago
4 0
Assuming that up is the positive direction, the velocity of the ball goes from it's initial and approaches zero, which it reaches at the apex of it's height. After peaking, the velocity is now reaching the same numbers it had on the way up, only with a negative value this time. If it had a velocity of 5m/s upon leaving the hand, it will have a velocity of -5m/s when it came back to the hand.
You might be interested in
The barrel of a rifle has a length of 0.855 m. A bullet leaves the muzzle of a rifle with a speed of 553 m/s. What is the accele
Novay_Z [31]

Answer:

Acceleration of the bullet will be 1778835.6 m/sec^2      

Explanation:

We have given length of the barrel refile s= 0.855 m

When the bullet leaves the muzzle its velocity is 553 m/sec

So final velocity v = 553 m/sec

Initial velocity will be 0 that is u = 0 m/sec

According to third equation of motion v^2=u^2+2as

553^2=0^2+2\times a\times 0.855

a=178835.6m/sec^2

5 0
3 years ago
Identify the following joint
MissTica

This is a ball and socket joint.

7 0
3 years ago
A long-distance swimmer is able to swim through still water at 4.0 km/h. She wishes to try to swim from Port Angeles, Washington
Roman55 [17]

Let \theta be the direction the swimmer must swim relative to east. Then her velocity relative to the water is

\vec v_{S/W}=\left(4.0\dfrac{\rm km}{\rm h}\right)(\cos\theta\,\vec\imath+\sin\theta\,\vec\jmath)

The current has velocity vector (relative to the Earth)

\vec v_{W/E}=\left(3.0\dfrac{\rm km}{\rm h}\right)\,\vec\imath

The swimmer's resultant velocity (her velocity relative to the Earth) is then

\vec v_{S/E}=\vec v_{S/W}+\vec v_{W/E}

\vec v_{S/E}=\left(\left(4.0\dfrac{\rm km}{\rm h}\right)\cos\theta+3.0\dfrac{\rm km}{\rm h}\right)\,\vec\imath+\left(4.0\dfrac{\rm km}{\rm h}\right)\sin\theta\,\vec\jmath

We want the resultant vector to be pointing straight north, which means its horizontal component must be 0:

\left(4.0\dfrac{\rm km}{\rm h}\right)\cos\theta+3.0\dfrac{\rm km}{\rm h}=0\implies\cos\theta=-\dfrac{3.0}{4.0}\implies\theta\approx138.59^\circ

which is approximately 41º west of north.

6 0
3 years ago
The electromagnetic wave shown above is made of vibrating
Natasha2012 [34]

B. electric and magnetic fields.

Explanation:

This is a wave diagram of an electromagnetic wave showing vibration of both electric and magnetic fields.

An electromagnetic wave is made up of electric and magnetic fields vibrating.

  • These waves are deflected neither by electric fields nor magnetic fields.
  • The electromagnetic field is made up of a broad range of radiations.
  • Visible light is an electromagnetic radiation.
  • The magnetic and electric fields are oriented perpendicularly and they are transverse waves.

Learn more:

Electromagnetic waves brainly.com/question/12450147

#learnwithBrainly

3 0
3 years ago
[WASSCE June 2008 Qu 11]
NISA [10]

α=30°

F=20 N

Fh=F*cos(α)

Fv=F*cos(90-α)=F*sin(α) (vertical component of the force F)

Fv=20*0,5=10.00 N

Answer (C)

4 0
3 years ago
Other questions:
  • Find an equation for the plane that passes through the point [1, 1, 8] and that has [-1, -6, 3] as normal vector.
    15·1 answer
  • Which statement defines an ore? Rock broken down to become part of the topsoil. Rock dug out from the earth to use in constructi
    15·2 answers
  • A test charge of +4 µC is placed halfway between a charge of +6 µC and another of +2 µC separated by 20 cm. (a) What is the magn
    12·1 answer
  • If you went to a planet that had the twice the radius as Earth, but the same mass, a 1 kg pineapple would have a weight of
    10·1 answer
  • What are the principles of a micrometer screw guage
    10·1 answer
  • an ampere is the si unit of which of the following? electric power, electric current, resistance, electric potential difference
    9·1 answer
  • What type of relationship does this graph show?
    15·1 answer
  • A 200 g load attached to a horizontal spring moves in simple harmonic motion with a period of 0.410 s. The total mechanical ener
    7·1 answer
  • Pls quickly brainliest to the first to anwser
    13·2 answers
  • At the end of the previous experiment, aclumsy scientist drops the coil, while still in the magnetic field, and still oriented w
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!