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
KIM [24]
3 years ago
12

a croquet ball, after being hit by a mallet,slows down and stops. do the velocity and acceleration of the ball have the same sig

ns
Physics
1 answer:
NeTakaya3 years ago
7 0
It depends. While slowing down acceleration will have negative sign but the velocity depends upon the initial point sonce velocity is a vector quantity if it is going back towards the initial position it will reduce but if it passes the initial position and goes back it will have negative sign....so it totally depends upon the situation.
You might be interested in
HELP PLEASE!!!
Andru [333]

Answer:

It is si-32

Explanation:

5 0
3 years ago
In Example Suppose the rod stays on the wall in the same position, but the hinge is moved to be at the center of mass position o
navik [9.2K]

Answer:

A

Explanation:

The change in the system’s gravitational potential energy would be zero

4 0
3 years ago
Consider 2 converging lenses of focal lengths 5 mm (objective) and 50 mm.(eyepiece) An object 0.1 mm in size is placed a distanc
AleksandrR [38]

Answer:

1)   q₁ = 12.987 cm , b)       L = 17.987 cm , c)      m = 179.87

Explanation:

We can solve the geometric optics exercises with the equation of the constructor

         1 / f = 1 / p + 1 / q

where f is the focal length, p and q are the distance to the object and the image respectively.

Let's apply this equation to our case

1) f = 5mm = 0.5 cm

    p₁ = 5.2 mm = 0.52 cm

    h = 0.1 mm = 0.01 cm

    1 / q₁ = 1 / f- 1 / p

    1 / q₁ = 1 / 0.5 - 1 / 0.52 = 2 - 1.923

    1 / q₁ = 0.077

    q₁ = 12.987 cm

2) in this part they tell us that the eyepiece creates an image at infinity, therefore the object that comes from being at the focal length of the eyepiece

            p₂ = 5 cm

The absolute thing that goes through the two lenses is

           L = q₁ + p₂

           L = 12.987 +5

           L = 17.987 cm

3) This lens configuration forms the so-called microscope, whose expression for the magnifications

           m = -L / f_target 25 cm / f_ocular

           m = - 17.987 / 0.5 25 / 5.0

            m = 179.87

8 0
3 years ago
For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. What force will make it fall
spayn [35]

Maintaining an orbit has nothing to do with the satellite's speed.
ANY (tangential) speed is enough to stay in orbit, if the satellite
just stays away from Earth's atmosphere.

If the satellite completely stops moving 'sideways' at all, and just
hangs there, then the forces of gravity between the satellite and
the Earth will pull them together ... the satellite will fall into the
atmosphere and then to the ground.

3 0
4 years ago
Read 2 more answers
9) For a horizontally launched projectile, decreasing the height of the
Volgvan

Answer:

Increasing the launch height increases the downward distance, giving the horizontal component of the velocity greater time to act upon the projectile and hence increasing the range.

Explanation:

4 0
2 years ago
Other questions:
  • MULTIPLE CHOICE QUESTION
    7·1 answer
  • I need help ASAP I need to get this right plz plz plz!!!!!
    14·2 answers
  • Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?
    5·1 answer
  • viewed from earth two stars form an angle of 76.04 degrees. StarA is 23.30 light years from earth star Bis 34.76 light years fro
    10·1 answer
  • A scientist is studying a shock wave from an earthquake. What kind of wave is being studying?
    6·1 answer
  • A gas has a volume of 6 L, a temperature of 70 degrees C, and a pressure of 2 atm. If the gas is compressed to a volume of 4 L,
    11·1 answer
  • Sound travels faster through rigid material like steel rather than through spongy materials like rubber. Why?
    8·1 answer
  • A rotating object starts from rest at t = 0 s and has a constant angular acceleration. At a time of t = 2.5 s the object has an
    10·2 answers
  • Pluto has a shape that is nearly round,and it orbits the sun,it has five known moons.why is it called a dwarf planet and not a p
    10·1 answer
  • Absolute Zero is when energy / molecules stop moving.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!