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
mash [69]
3 years ago
12

Suppose an object in freefall is dropped from a building it’s starting velocity is 0m/s. Ignoring the facts of air resistance wh

at is the speed (in m/s) of the object after falling three seconds?
Physics
1 answer:
Alja [10]3 years ago
3 0

v = v₀ + at

v = final speed, v₀ = initial speed, a = acceleration, t = elapsed time

Given values:

v₀ = 0m/s (starts from rest), a = 9.81m/s², t = 3s

Plug in and solve for v:

v = 0 + 9.81(3)

v = 29.4m/s

You might be interested in
The diagram shows what happens to a system undergoing an adiabatic process.
posledela
The answer is:
B. <span>X: Work is done to the system and temperature increases.
Y: Work is done by the system and temperature decreases.</span>
5 0
3 years ago
Read 2 more answers
What is peer review.why is it important​
madam [21]

Acc to

Publisso

Peer review is subjecting the author's scholarly work and research to the scrutiny of other experts in the same field to check its validity and evaluate its suitability for publication.

A peer review helps the publisher decide whether a work should be accepted.

6 0
2 years ago
Read 2 more answers
What is the closeness of measured value to an accepted value?
kotykmax [81]
Accuracy?

filler text filler text filler text
3 0
3 years ago
. Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connecte
Umnica [9.8K]

Given :

Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connected with wires as shown in the circuit given in figure. The current flowing in both the circuits is the same.

To Find :

Will the heat produced in both the cases be equal.

Solution :

Heat released is given by :

H = i²Rt

Here, R is resistance and is given by :

R = \dfrac{\rho L}{A}

So,

H = i^2\times \dfrac{\rho L}{A} t\\\\H = \dfrac{i^2\rho Lt}{A}

Now, in the question every thing is constant except for the length of the wire and from above equation heat is directly proportional to the length of the wire.

So, heat produced by Reem's wire is more than Nain one.

Hence, this is the required solution.

7 0
2 years ago
The force applied when using a simple machine
jenyasd209 [6]

Answer:

effort

Explanation:

effort is the answer

7 0
3 years ago
Read 2 more answers
Other questions:
  • A rogue band of colonists on the moon declares war and prepares to use a catapult to launch large boulders at the earth. Assume
    7·1 answer
  • Well into the twentieth century, many scientists believed the ocean floor was
    5·1 answer
  • A battery operated DVD player uses 12 DV volts from AA batteries and draws a current of 3 A. Calculate the resistance.
    6·1 answer
  • What is the difference between Drift current &amp; Diffusion current ?
    11·1 answer
  • A projectile is launched with an initial velocity of 25 m/s at an angle of 30° above the horizontal. The projectile reaches maxi
    14·1 answer
  • What is the difference between mass and density?
    10·2 answers
  • Which statement most accurately describes the second law of thermodynamics?
    12·1 answer
  • A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in a uniform magnetic field of
    13·1 answer
  • Describe the direction of the electric force between two opposite charges, between two like charges, and when a charge is in an
    11·1 answer
  • Point charge μC is located at x =, y = , point charge is located at x = 0m. What are (a)the magnitude and (b)direction of the to
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!