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
Effectus [21]
3 years ago
10

A 2-kg ball is moving with a speed of 4 m/s, and a 4-kg ball is moving with a speed of 2 m/s. What can you conclude about the of

kinetic energies of the two balls?
Physics
1 answer:
Mila [183]3 years ago
4 0
<h2>Kinetic energy of mass 4 kg ball is less than kinetic energy of mass 2 kg ball</h2>

Explanation:

Kinetic energy = 0.5 x Mass x Velocity²

For ball of mass 2 kg

           Mass, m = 2 kg

           Velocity, v = 4 m/s

           Kinetic energy = 0.5 x 2 x 4² = 16 J

For ball of mass 4 kg

           Mass, m = 4 kg

           Velocity, v = 2 m/s

           Kinetic energy = 0.5 x 4 x 2² = 8 J

Kinetic energy of mass 4 kg ball is less than kinetic energy of mass 2 kg ball

You might be interested in
Find the average velocity of the car during the time last three second interval. Answer in units of m/s.
Pani-rosa [81]

Answer:

<u>Average Velocity:</u>

When a body covers some displacement moving from point A to B, in a given time,t. Then dividing the total distance covered by the time taken to complete the displacement is called as the average velocity of that car.

We can calculate the average velocity of car by subtracting the initial displacement of a body,s₁ from  the final displacement position of the body, s₂. And then dividing by the initial time,t₁ been subtracted from the final time,t₂.

  • Δv=x₂-x₁/t₂-t₁,

We will get the required results, now if we want to obtain the results in the final three seconds then, we can have the following explanation to that as given.

Explanation:

Lets say, that we have the car moving for 10 seconds and then it stops at the eleventh second of the trip on final position, of the displacement. Then we divide the whole trips into small segments, as we will have the different velocity at each interval but, the velocity is unknown at the last 3 seconds is unknown=?.  

  • Total time taken, Δt= 11 seconds,
  • Then lets say the velocity at the 8th second is , v=25 m/s,then
  • Δv=x₂-(25)/11-0,⇒Δv=x₂-25/11,
3 0
3 years ago
Would talking to plants positively or negative affect how they grow?
andrey2020 [161]

Answer:

u go to vanguard? in 6th grade

3 0
3 years ago
Read 2 more answers
YO IF YOU ARE GOOD AS SCIENCE PLEASE ANSWER THIS QUESTION IT WOULD HELP A LOT NO LINKS!!!
zhuklara [117]

Answer:

1  and 5 and 3

Explanation:

hope this helps

7 0
3 years ago
Read 2 more answers
As the earth rotates, what is the speed of a physics student in Miami, Florida, at latitude 26∘26∘? Ignore the revolution of the
Ugo [173]

Answer:

v = 418.31 m/s

Explanation:

given,

Radius of earth = 6400 Km

latitude at Miami, Florida = 26°

first we have to find the radius of the rotation at that latitude.

radius = 6400 x 1000 x cos 26°

circumference will be equal to = 2 π r

cos θ is used because at equator angle is zero radius is maximum and cos θ is maximum at 0°

calculation of time to

time = 24 hr

t = 24 x 60 x 60 = 86400 s

speed = \dfrac{distance}{time}

v= \dfrac{2\times \pi \times 6400\times 1000\times cos 26^0}{86400}

      v = 418.31 m/s

speed of a physics student in Miami, Florida is equal to v = 418.31 m/s

7 0
3 years ago
What do positive ions tend to do
notsponge [240]

Answer:

an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion), which is created by an electron gain and is attracted to the anode.

7 0
3 years ago
Other questions:
  • 1. How does the frequency of light affect the release of photons?
    15·1 answer
  • 1. A uniform magnetic field is directed vertically upwards. In which direction in this field should an alpha particle be project
    14·1 answer
  • Illustrated here are three different<br> of carbon. They vary by the number of
    13·1 answer
  • A ball is thrown straight up and reaches a maximum height of 5 m.
    9·1 answer
  • A baseball is hit at an initial speed of 40 m/s at an angle of 60° above the horizontal and reaches a maximum height of h meters
    9·2 answers
  • Can an object travel at the speed of light? Why or<br> why not?
    13·1 answer
  • A 52 kg child on a swing is travelling at 6 m/s . What is his gravitational potential energy if he has 1000 J of the mechanical
    7·1 answer
  • A planet orbits a star along an elliptical path from point X to point Y, as shown in the figure. In which of the following syste
    12·1 answer
  • How is urine produced
    12·2 answers
  • Prove that acceleration due to gravity is independent to the mass of falling object.<br>​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!