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
Romashka [77]
3 years ago
10

If an object is dropped from a tall building and hits the ground 3.0 s later, what is the velocity of the object when it hits th

e ground? (Remember that the velocity is downward)
Physics
1 answer:
dusya [7]3 years ago
6 0

Using the kinematic equation:

Vf=Vi+at then plug the values in.

Vi=0 m/s (Because the ball is dropped)

t=3 s.

a=9.81 m/s=g

Vf=0+3*9.81;

Vf=29.43 m/s



You might be interested in
What’s the kinetic energy of the roller coaster at the top and bottom of the hill? Use . A kiddie roller coaster car has a mass
serious [3.7K]
K.E1=1/2×100×3²
=50×9
=450J
K.E2=1/2×100×36
=50×36
=1800J
0 0
3 years ago
Read 2 more answers
Where does bacteria come from
brilliants [131]

Answer:

Fugis

Explanation:

dsd

4 0
3 years ago
Read 2 more answers
Consider a short time span just before and after the spark plug in a gasoline engine ignites the fuel-air mixture and releases 1
Tju [1.3M]

Answer:

Temperature after ignition=7883.205 K

Explanation:

The number of moles is,

n=PV/RT

=(1.18x10^6)(47.9x10^-6)/8.314(325)

= 0.0209 moles

a) In this process volume is constant

Q=U

=nCv.dT

dT= Q/nCv

=1970/(1.5x8.314)(0.0209)

= 7558.205 K

The final temperature is,

= 7558.205+325

= 7883.205 K

5 0
3 years ago
Read 2 more answers
What subatomic particle acts like a mini-magnet?
Semenov [28]
 The subatomic particles that acts like a mini-magnet is electron. Electrons are negatively charged sub atomic particles in an atom. The electron spin is a property of an electron that makes it behave like it's spinning; a spinning electron produces a magnetic field that makes it behave like a tiny magnet in an atom. 
5 0
3 years ago
30.42
CaHeK987 [17]

Answer: Try C

Explanation:

It's the only one that makes since.

7 0
2 years ago
Other questions:
  • Finally, you are ready to answer the main question. Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour miles/hou
    5·2 answers
  • A man jogs at a speed of 1.6 m/s. His dog
    13·1 answer
  • You cant see the cells in your body because most of them are very small true or false?
    8·2 answers
  • There is a girl pushing on a large stone sphere. The sphere has a mass of 8200 kgand a radius of 90 cm and floats with nearly ze
    15·1 answer
  • How do u do 5? Show me plz
    7·1 answer
  • Which atmospheric condition is most likely responsible for the wind blowing the clouds from the sea towards the land?
    8·1 answer
  • The evidence is overwhelming that the Grand Canyon was dug over a span of millions of years by the erosive power of the Colorado
    15·1 answer
  • Physics question plz help ASAP
    14·1 answer
  • The force that keeps an object moving in a circle is called.
    7·1 answer
  • Prove that density of 5l of water is 1000
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!