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
kotykmax [81]
2 years ago
14

5) A moving 2 kg object has an initial velocity of 10 m/s. It comes to a stop on a rough

Physics
2 answers:
umka2103 [35]2 years ago
4 0

Answer:

a) kinetic energy=0.5×mass×speed²

kinetic energy=0.5×2×10²=100 joules

Explanation:

im not sure about the rest :(

beks73 [17]2 years ago
4 0

Answer:

a) 100J

b)20N

c) 100J

Explanation:

A) KE = 0.5 x mass x velocity^2

= 0.5 x 2 x 10^2

= 100 J

B) Work done = Force x distance

Since work done = energy transferred

Energy transferred = Force x Distance

Energy transferred/ Distance = Force

100/5 = 20 N

C) Let's assume that all the Kinetic energy of the subject get's transferred into heat energy

Therefore Kinetic energy = Heat energy = 100 J

You might be interested in
12) A neutral atom has two, eight, eight electrons in its first, second, and third energy levels.This information ________.
pentagon [3]

Answer:

C.

Explanation:

Option C

The information given in the question tells us about the number of electrons in an atom and also the number of shells in the atom. So, we will come to know about the atomic number, size and chemical properties of the atom. But we cannot determine atomic mass. Atomic mass is a function of number of neutrons and protons.

3 0
3 years ago
If the vertical axis and time on the horizontal axis if the speed is steadily increasing could the speef line ever become perfec
Phantasy [73]

A graph of real speed can have a section that's as steep as you want,
but it can never be a perfectly vertical section.

Any vertical line on a graph, even it it's only a tiny tiny section, means
that at that moment in time, the speed had many different values.

It also means that the speed took no time to change from one value to
another, and THAT would mean infinite acceleration.

8 0
3 years ago
if a ball with an original velocity of 0 is dropped from a tall structure and takes 7 Seconds to hit the ground what velocity do
krok68 [10]

a_y=\dfrac{v_y-v_{0y}}t\implies-9.81\,\dfrac{\mathrm m}{\mathrm s^2}=\dfrac{v_y-0}{7\,\mathrm s}\implies v_y=-68.7\,\dfrac{\mathrm m}{\mathrm s}

5 0
3 years ago
What is power?
e-lub [12.9K]

Answer:

B) Power is the rate at which work is done

4 0
3 years ago
Read 2 more answers
Why is the sky blue?
Levart [38]

Answer:

Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

7 0
2 years ago
Other questions:
  • A thin cylindrical shell is released from rest and rolls without slipping down an inclined ramp that makes an angle of 30° with
    8·1 answer
  • Monochromatic light shines on the cathode in a photoelectric effect experiment, causing the emission of electrons. If the freque
    13·1 answer
  • An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10
    9·1 answer
  • Which of these experiments would make use of qualitative data
    12·2 answers
  • you kick a soccer ball straight up into the air with a speed of 21.2 m/s how long does it take the soccer ball to reach its high
    5·1 answer
  • Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angl
    6·1 answer
  • The portion of electromagnetic spectrum is occupied by signal is called ​
    15·1 answer
  • Where do you find cations on the periodic table
    5·1 answer
  • Why doesn’t change in a substance during a physical change?
    15·1 answer
  • Question is in the picture
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!