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
Nookie1986 [14]
3 years ago
10

A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 2.0 s later. You ma

y ignore air resistance. If the height of the building is 30 m, what must the initial speed be of the first ball if both balls are to hit the ground at the same time
Physics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

4.9 m/s

Hope this helps! c:

Explanation:

You might be interested in
Why are you more likely to get a concussion when hit by a field hockey ball than a
Aleksandr-060686 [28]

Answer:

because it can be hard

Explanation:

I said that because they be on bed rest

6 0
3 years ago
An Ohmic material is one in which its resistance does not depend on the voltage across it or the current within it. In that case
Alexandra [31]

Voltage

Mark brainliest

6 0
3 years ago
What is the equation describing the motion of a mass on the end of a spring which is stretched 8.8 cm from equilibrium and then
Sedbober [7]

Answer:

x=(0.088m)\cos(\sqrt{\frac{k}{m} }  t)

Explanation:

We first identify the elements of this simple harmonic motion:

The amplitude A is 8.8cm, because it's the maximum distance the mass can go away from the equilibrium point. In meters, it is equivalent to 0.088m.

The angular frequency ω can be calculated with the formula:

\omega =\sqrt{\frac{k}{m}}

Where k is the spring constant and m is the mass of the particle.

Now, since the spring starts stretched at its maximum, the appropriate function to use is the positive cosine in the equation of simple harmonic motion:

x=A\cos(\omega t)

Finally, the equation of the motion of the system is:

x=(0.088m)\cos(\omega t)

or

x=(0.088m)\cos(\sqrt{\frac{k}{m} }  t)

7 0
3 years ago
A sealed container filled with gas is heated. What happens?
Luda [366]

The internal pressure increases as the gas is heated

5 0
3 years ago
Read 2 more answers
Why are peer reviews important?
riadik2000 [5.3K]
Peer review is important because it is used by scientists to decided which results should be published in a scientific journal
8 0
3 years ago
Read 2 more answers
Other questions:
  • If Bob applies 10 N of force on box, what will happen to the acceleration of the box if he adds more weight to it?
    9·2 answers
  • Balance the following equation Fe203+HCL fecl3+H20
    8·1 answer
  • Help with 5 and the question below. BRAINLIEST FOR THE CORRECT ANSWER! Urgent Physics help!
    12·1 answer
  • A 1000-kg car has 50,000 joules of kinetic energy. What is the speed?
    10·2 answers
  • A cube of side 6.50 cm is placed in a uniform field E = 7.50 × 10^3 N/C with edges parallel to the field lines (field enters the
    14·2 answers
  • Which of the following best describes magnetic fields? Question 4 options: Magnetic fields must have only positive charges. Magn
    5·2 answers
  • Doubling an object’s height will have what effect on its potential energy due to gravity?
    11·1 answer
  • Standard Heat of Formation: The enthalpy change for the formation of 1 mol of a substance in its standard state from its constit
    14·1 answer
  • London lives 1200 meters south of Chick-fil-A and is thinking about going there for lunch. When she is ready to leave, she reali
    5·1 answer
  • Consider the previous question. which has the greater acceleration: the bug or the windshield?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!