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
MArishka [77]
2 years ago
5

A boy weighing 50 kg is running at 2m/s. What is its kinetic energy? * 10 points

Physics
1 answer:
pentagon [3]2 years ago
8 0
The answer is 100.
The formula is KE = 1/2mv^2
Then you plug in 50 to the m
And 2 to the v . That’s how I got 100 .
Hope this helps
You might be interested in
Not a assignment question, just wanna know if scientists know what’s beyond the edge universe
Bond [772]
No they don’t. All the pictures we see if the universe are computer generated. Well, most of them are. We don’t exactly know how the milky way looks. It’s just very good guess.
8 0
2 years ago
Read 2 more answers
What can electricty from solar power be used for​
Mandarinka [93]
Regular electrical needs such as heat, a/c, appliances, anything that would be used regularly with electricity. Most electrical companies use gas, coal, and other nonrenewable resources to power houses. Solar power is just a renewable way of gathering power from the sun and converting it to electricity.
7 0
2 years ago
What is the kinetic energy i want a girl to answer a petty one
Alex Ar [27]
An object in motion lolllsss
8 0
3 years ago
Read 2 more answers
Specific heat is the amount of heat required to raise the temperature of a material by 1°C per what unit?
nydimaria [60]

The heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).


or C. Mass if you're on plato

3 0
2 years ago
Read 2 more answers
According to Newton’s law of universal gravitation, which statements are true?
andreyandreev [35.5K]

Before we solve this, we should know this fact:

According to Newton's Law of Gravitation, the force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The force acts along the line joining the centres of the two objects. It can be shown by this:

F ∝ \frac{Mm}{ {d}^{2} }

Now, let us check all the options.

A. As we move to higher altitudes, the force of gravity on us decreases.

<em>This </em><em>statement </em><em>is </em><em>true.</em>

The force of gravity is inversely proportional to the square of distance from the centre of the earth. If, we go up the surface of the earth, the distance from the centre of the earth increases and hence the value of force of gravity decrease. So, force of gravity decreases with altitude.

B. As we move to higher altitudes, the force of gravity on us increases.

<em>This </em><em>statement</em><em> </em><em>is </em><em>false.</em>

We have already got the result in option A. that the force of gravity decreases with altitude. It never increases with altitude.

C. As we gain mass, the force of gravity on us decreases.

<em>This </em><em>statement</em><em> </em><em>is </em><em>false.</em>

The force of gravity is directly proportional to the product of the masses. So, if increase our mass, then the force of gravity will also increase and if we decrease our mass, then the force of gravity decreases.

D. As we gain mass, the force of gravity on us increases.

<em>This </em><em>statement</em><em> is</em><em> </em><em>true.</em>

As mentioned earlier in option C., the force of gravity is directly proportional to the product of the masses of the earth and another object. So, as we gain mass, the force of gravity on us increases.

E. As we move faster, the force of gravity on us increases.

<em>This </em><em>statement</em><em> is</em><em> </em><em>true</em><em>.</em>

Here, we have to consider a different formula. According to Newton's Second Law,

F = ma, where F is the force, m is the mass and a is the acceleration.

In other words,

F ∝ a, i.e., force is directly proportional to acceleration.

We know, acceleration is the rate of change of velocity of an body within a time period.

So, if speed is increased, then acceleration will also be greater, which results in the increase of force. So, as we move faster, the force of gravity on us increases.

<u>Answers:</u>

A: As we move to higher altitudes, the force of gravity on us decreases.

D: As we gain mass, the force of gravity on us increases.

E: As we move faster, the force of gravity on us increases.

Hope you could understand.

If you have any query, feel free to ask.

7 0
2 years ago
Other questions:
  • *asap*<br> Explain how waves, energy and matter are related.
    14·2 answers
  • Starting from rest, a 4.10-kg block slides 2.10 m down a rough 30.0° incline. The coefficient of kinetic friction between the bl
    14·1 answer
  • According to Einstein’s theory of relativity, how can energy be created?
    9·1 answer
  • A 2.4 kg box has an initial velocity of 3.6 m/s upward along a plane inclined at 27◦ to the horizontal. The coefficient of kinet
    5·1 answer
  • EXPERTS/TRUSTED HELPERS/GENIUSES/ACE HeLP ASAP
    11·1 answer
  • Is it plagiarism/copying to do a science fair project that is similar to one that has been done already, if you modify certain a
    12·2 answers
  • Drill bits are attached to power drills to make holes. Drill bits are made of {BLANK 1} because they’re hard and resistant to co
    9·1 answer
  • The following steps occur in rods when they are excited by photons of light. What is the proper sequence for these steps? 1. Mem
    6·1 answer
  • What was the experiment carried out by Hershel &amp; Ritter.
    13·1 answer
  • A mother (mass 60.0 kg) skates across an ice rink with negligible friction toward her child (mass 20.0 kg), who is standing stil
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!