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
jenyasd209 [6]
3 years ago
12

A person of 83 kg is in an elevator. If the elevator is moving at

Physics
1 answer:
Artyom0805 [142]3 years ago
4 0

Answer: Option B) 1038J

Explanation:

Given that

Mass of person (m) = 83kg

kinetic energy (KE) = ?

Speed of elevator (v) = 5m/s

Kinetic energy is the energy possessed by a moving object. It is measured in joules, and depends on the mass (m) of the object and the speed (v) by which it moves

i.e K.E = 1/2mv²

KE = 1/2 x 83kg x (5m/s)²

KE = 0.5 x 83 x 25

KE = 1037.5J (Round the kinetic energy to the nearest whole number as 1038J)

Thus, the kinetic energy of the person is 1038 Joules

You might be interested in
Convert 60 kg to mg using the method of dimensional analysis
Svetradugi [14.3K]

600,000

PLEASE MARK AS BRAINLIEST ANSWER

5 0
3 years ago
7) The acceleration of gravity on the Moon is only one-sixth of that on Earth. If you hit a baseball on the Moon with the same e
rusak2 [61]

Answer:

The acceleration of gravity on the Moon is only one-sixth of that on Earth. If we hit a baseball on the moon with the same effort(and at the speed and angle)that we would on earth, the ball would land 6 times as far. The ball on the moon will cover 6 times more distance than Earth.

Explanation:

Speed=distance travelled/Time required speed

Speed=d/t

Acceleration of gravity on earth=9.8 m/s^2

Acceleration of gravity on Moon=1.62 m/s^2

So the maximum height of ball will be the ration of these both gravity.

4 0
3 years ago
A car initially travels west with a kinetic energy of 10 J. Then it travels east at three times its original speed. What is its
JulijaS [17]

KE₁ = 1/2mv²

10 J = 1/2mv²

KE₂ = 1/2m(3v)²

KE₂ = 1/2mv².9

KE₂ = 10 . 9 = 90 J

8 0
2 years ago
Earth Atmosfear is uniqe amongst the planets and is able to support life because it contains a large amount of __?
kiruha [24]

Answer:

A

Explanation:

The abundance of oxygen in our atmosphere and the presence of liquid water on the surface of our planet makes our "Pale Blue Dot" stand out in contrast to the other planets in the solar system — a unique and fragile home for life.

3 0
2 years ago
A walkman uses four standard 1.5 V batteries. How much resistance is in the circuit if it uses a current of 0.02A? *
hodyreva [135]

Answer:

75ohms

Explanation:

V= IR

V = 1.5volts

I = 0.02A

1.5 = 0.02×R

Making R the subject

R = 1.5/0.02

R = 75ohms

The resistance in the circuit will be 75ohms

7 0
3 years ago
Other questions:
  • a furnace supplies 28kW of thermal power at 300C to an engine and exhausts waste energy at 20C. At the very best, how much work
    15·1 answer
  • How many moons does Venus have?
    11·2 answers
  • A plane electromagnetic wave with wavelength 3.0 m, travels in free space in the+xdirection with its electric field vector~E, of
    12·1 answer
  • A cubical box, 5.00 cm on each side, is immersed in a fluid. The gauge pressure at the top surface of the box is 594 Pa and the
    13·1 answer
  • Is a snowflake falling and then melting then getting condescend and then evaporates back into the air a example of the 3rd law o
    5·1 answer
  • If their were two dogs and 1 cat who would win hint: The Car
    14·2 answers
  • Which kind of cloud touches the ground making it hard to see
    6·1 answer
  • What is the chemical formula for the iconic compound aluminum oxide (a bond between aluminum and oxygen)
    8·1 answer
  • When 93 is written in simplest radical form, which value remains under the radical?
    13·1 answer
  • The teacher measured the maximum height and the minimum height of the plastic duck above the screen as the wave passed. The teac
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!