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
Wewaii [24]
3 years ago
15

near the surface of the earth, objects in free fall (but not terminal velocity) experience a. constant distance. b. constant acc

eleration. c. constant speed. d. constant velocity.
Physics
2 answers:
DerKrebs [107]3 years ago
5 0
B- constant acceleration
Alenkasestr [34]3 years ago
3 0
<h3><u>Answer;</u></h3>

B. constant acceleration.

<h3><u>Explanation</u>;</h3>
  • Free fall is the type of motion of a body or an object when only gravity is acting on it.
  • <em><u>All objects undergo free fall on the earth surface at the same rate irrespective of their mass. This is because the gravitational field on the surface of the earth 9.8 N/kg, causes and acceleration equivalent to 9.8 m/s/s of any object in free fall motion.</u></em>
  • Therefore,<u> the acceleration of any freely falling object near the surface of the earth is 9.8 m/s².</u>
You might be interested in
A hurricane becomes more powerful by evaporating water from A) lakes. B) mountains. C) oceans. D) rivers.
Luda [366]
A hurricane becomes more powerful by evaporating water from oceans
3 0
2 years ago
Read 2 more answers
Rotational dynamics about a fixed axis: A person pushes on a small doorknob with a force of 5.00 N perpendicular to the surface
FrozenT [24]

Answer:

I = 2 kgm^2

Explanation:

In order to calculate the moment of inertia of the door, about the hinges, you use the following formula:

\tau=I\alpha     (1)

I: moment of inertia of the door

α: angular acceleration of the door = 2.00 rad/s^2

τ: torque exerted on the door

You can calculate the torque by using the information about the Force exerted on the door, and the distance to the hinges. You use the following formula:

\tau=Fd        (2)

F: force = 5.00 N

d: distance to the hinges = 0.800 m

You replace the equation (2) into the equation (1), and you solve for α:

Fd=I\alpha\\\\I=\frac{Fd}{\alpha}

Finally, you replace the values of all parameters in the previous equation for I:

I=\frac{(5.00N)(0.800m)}{2.00rad/s^2}=2kgm^2

The moment of inertia of the door around the hinges is 2 kgm^2

3 0
3 years ago
41. 2072 Set E Q.No. 11 A source of sound produces a note of
Nimfa-mama [501]
A. is the answer for this
4 0
2 years ago
Superman is riding his bicycle. At the base of a hill, he has a specific amount of kinetic energy. Then he coasts up the hill wi
algol13

Answer:

D. Friction and air resistance created heat on his trip up the hill.

Explanation:

Energy transformation from one form to another is not 100% efficient. This is the postulate of the first law of thermodynamics.

Most of the energy transformation is not purely 100%.

When energy is transformed, some are usually wasted.

  • In this case, in moving from bottom up, Superman produced some heat and encountered air resistance.
  • To reach the top, he must have overcome the resistance and produce enough heat to power him through.
  • This reduces the amount of potential energy that should have been the same as the kinetic energy down below.

7 0
3 years ago
Calculate the resistance of the following network by R=R1+R2+R3​
gayaneshka [121]

Answer:

R=60Ω

Explanation:

You are looking for the total resistance of a parallel circuit so the formula is

R=R1+R2+R3, where R1=10Ω, R2=20Ωand R3=30Ω

R=10Ω+20Ω+30Ω

R=60Ω

5 0
3 years ago
Other questions:
  • Which of the following statements are true for electric field lines? Check all that apply. Check all that apply. Electric field
    7·1 answer
  • An object that is accelerating may be
    13·1 answer
  • Bowling balls are roughly the same size, but come in a variety of weights. Given its official radius of roughly 0.110 m, calcula
    12·1 answer
  • What type of force pulls in two opposite directions?
    8·2 answers
  • SHOW ADEQUATE WORKINGS IN THIS SECTION
    11·1 answer
  • A person hits a 45-g golf ball. The ball comes down on a tree root and bounces
    8·1 answer
  • Suppose the solar nebula had cooled much more before the solar wind cleared away the remaining gas. In that case, the terrestria
    9·1 answer
  • A man walks 2.6 miles east, then turns and walks 6.7 miles north. What is his resultant
    6·1 answer
  • Which equation is used to find an object's acceleration?
    9·1 answer
  • Which category of mechanical waves are produced during an earthquake?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!