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
Rudik [331]
3 years ago
12

2) A ball is thrown straight up into the air and passes a window 3 seconds after being released. It passes the same

Physics
1 answer:
alexdok [17]3 years ago
5 0

Answer:

Hi, There! your Answer is Below!

10.29 m/s

Explanation:

a = -9.8

v = Vi - 9.8 t

h = 0 + Vi t - 4.9 t^2

-------------------------------

----------------------

at the top, t = .3 + 1.5/2 = 1.05

and v = 0 = Vi - 9.8(1.05)

so

Vi = 9.8(1.05) = 10.29 m/s

(Dont forget to mark thanks) :)

You might be interested in
if an object is being pulled by two forces, one 4n to the left, and the other 2 n to the right, what is the net force acting on
Naddika [18.5K]

Answer:

2 N to the left

Explanation:

6 0
3 years ago
Besides adding adaptive optics to a telescope, what else can be done to reduce the effects of seeing?
anyanavicka [17]
<span>There is an low cost and quickest alternative available for adaptive optics. Name of this technique is wavefront coding. The numerical analysis pretends to show the robustness of the technique under changes in pupil diameter and wavefront shape including intersubject and intrasubject variability, using always the same restoration filter or image decoder .Using this technique it is possible to obtain high resolution images under different ocular aberrations and pupil diameters with the same decoder, opening the possibility of real time high resolution images.</span>
7 0
3 years ago
Dave throws a 10 kg bowling ball straight up in the air. At the very tippy-top of its path, what is it's momentum?
svetoff [14.1K]

Answer:Zero

Explanation:

Given

mass of ball m=10\ kg

If the ball is thrown upward then at maximum point velocity of ball is zero because ball is no longer able to move upward

Momentum(P) of a particle is given by

P=mass\times velocity

P=10\times 0

P=0

Therefore at the highest point momentum is zero .

8 0
4 years ago
The scientist most often credited with the idea that matter can have wave-like properties is:
Flura [38]
I believe the correct answer from the choices listed above is option B. The scientist most often credited with the idea that matter can have wave-like properties is de Broglie. He <span>related E=mc^2, E=hf and p=mv in order to acquire the de Broglie wavelength, whose formula λ=h/p where h is Planck's constant and p is momentum of the particle.</span>
6 0
4 years ago
Read 2 more answers
Often times we think about insulation, we think about keeping cold items cold, such as drinks in an ice chest or the cool temper
Burka [1]

Answer:

So, insulation essentially works by creating a sort of barrier between the hot and the cold object. This barrier helps to reduce heat transfer by either reflecting the thermal radiation or by decreasing thermal conduction and convection from one object to the other.

4 0
2 years ago
Other questions:
  • James drove his car down a mountain road at an average rate of 30 mph and retunred over the same road at an average rate of 20 m
    5·1 answer
  • A ray moving in air at 62.9 deg
    11·1 answer
  • A machine that has no friction to overcome is called
    10·2 answers
  • Which letter correctly identifies the part of the hydrologic cycle that is most directly affected by impervious building materia
    10·1 answer
  • The magnetic field inside a 5.0-cm-diameter solenoid is 2.0 T and decreasing at 3.60 T/s.Part AWhat is the electric field streng
    14·1 answer
  • A rifle is fired in a valley with parallel vertical walls. The echo from one wall is heard 1.55 s after the rifle was fired. The
    7·1 answer
  • 6.67x10^-11x60x5.98x10^24
    15·1 answer
  • This flashlight uses three different forms of energy. Which of these shows the energy changes in the correct order?
    12·2 answers
  • Khẳng định nào không chính xác khi đặt doanh nghiệp gần vùng nguyên liệu:
    12·1 answer
  • #1 a person weighs 540n on earth what is the persons mass.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!