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
stepladder [879]
3 years ago
6

A stone dropped from the top of a 80m high building strikes the ground at 40 m/s after falling for 4 seconds. The stone's potent

ial energy with respect to the ground is equal to its kinetic energy … (use g = 10 m/s 2) Please explain how you got it so I can learn.
A) at the moment of impact.

B) 2 seconds after the stone is released.

C) after the stone has fallen 40 m.

D) when the stone is moving at 20 m/s.
Physics
1 answer:
Alinara [238K]3 years ago
4 0

Answer:

Explanation:

The explanation and answer to this is posted in your question #24236118

You might be interested in
I need help on 4 and 5 please
Ivan

Answer:

c

Explanation:

6 0
3 years ago
How do you calculate final velocity
serg [7]
Try looking google..
3 0
3 years ago
Read 2 more answers
An iron nail goes through a chemical change when iron in the nail combines with oxygen in the air to form iron oxide. This compo
Mazyrski [523]
It is like that, except most nails are steel or stainless steel, slowing to rusting process to about 5 years.
6 0
3 years ago
1.What type of sediment forms from minerals that crystallize from seawater?
nikdorinn [45]
The correct answers are as follows:
<span>1) hydrogenous sediment

2)sand and gravel

3) They rapidly break down at surface temperatures and pressures.</span>
7 0
3 years ago
Read 2 more answers
The sum of the kinetic and potential energies of a system of objects is conserved: Group of answer choices only when no external
uysha [10]

The sum of the kinetic and potential energies of a system of objects is conserved only when no external force acts on the objects.

<h3>Conservation of mechanical energy</h3>

The principle of conservation of mechanical energy states that the total mechanical energy of an isolated system (absence of external force) is always constant.

M.A = P.E + K.E

where;

P.E is potential energy

K.E is kinetic energy

Thus, the sum of the kinetic and potential energies of a system of objects is conserved only when no external force acts on the objects.

Learn more about conservation of mechanical energy here: brainly.com/question/24443465

7 0
2 years ago
Other questions:
  • What is NOT one of the three primary resources that families have to reach financial goals?
    15·1 answer
  • which part of a circuit creates an electric force field that makes it possible for the circuit to work
    12·1 answer
  • A policeman starts giving chase 60 seconds after a stolen car zooms by at 108 km/hr. At what minimum speed should he drive if he
    12·1 answer
  • An airplane flies 1760 km in 2 hours 45 minutes. What is its average speed in kilometers per hour?
    5·1 answer
  • . The inner and outer surfaces of a 4-m × 7-m brick wall of thickness 30 cm and thermal conductivity 0.69 W/m-K are maintained a
    5·1 answer
  • Eric has a mass of 80 kgkg. He is standing on a scale in an elevator that is accelerating downward at 1.7 m/s2m/s2. What is the
    7·1 answer
  • A car traveling at 26.8m/s hits the brakes to slow down before turning into a neighborhood. Determine how fast it is going after
    8·1 answer
  • Q. Two balls are released simultaneously from a certain
    10·1 answer
  • A cylinder within a piston expands from a volume of 1.00 L to a volume of 2.00 L against an external pressure of 1.00 atm. How m
    10·1 answer
  • When an unbalanced force acts on an object
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!