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
AVprozaik [17]
3 years ago
13

Se lanza hacia abajo un cuerpo de masa 2 kg con una velocidad de 1 m/s

Physics
1 answer:
Kay [80]3 years ago
7 0

Given that,

Mass = 2 kg

Height = 10 m

Speed = 1 m/s

We need to calculate the initial energy

Using formula of potential energy

P.E=mgh

P.E=2\times9.8\times10

P.E=196\ J

We need to calculate the final energy

Using formula of kinetic energy

K.E=\dfrac{1}{2}mv^2

Put the value into the formula

K.E=\dfrac{1}{2}\times2\times1^2

K.E=1\ J

We need to calculate the velocity when it is traveling 3 meters

Using conservation of energy

E_{i}=E_{f}

mgh=\dfrac{1}{2}mv^2

v^2=2\times g\times h

Put the value into the formula

v^2=2\times9.8\times3

v=\sqrt{2\times9.8\times3}

v=7.66\ m/s

Hence, The initial and final energy are 196 J and 1 J.

The speed of the particle is 7.76 m/s.

You might be interested in
S.I unit for moment of inertia of a fly wheel​
qaws [65]

Answer:

m is expressed in kilograms and r in metres, with I (moment of inertia) having the dimension kilogram-metre square.

8 0
1 year ago
Giving brainiest to correct answer.
mixas84 [53]

Answer:

5.33\ m/s

Explanation:

We\ know\ that,\\Momentum=Mass*Velocity\\p=mv\\Hence,\\Lets\ first\ consider\ the\ case\ of\ the\ two\ balls\ 'Before\ Collision':\\\\Mass\ of\ the\ green\ ball=0.2\ kg\\Initial\ Velocity\ of\ the\ green\ ball=5\ m/s\\Initial\ Momentum\ of\ the\ green\ ball=5*0.2=1\ kg\ m/s\\\\Mass\ of\ the\ pink\ ball=0.3\ kg\\Initial\ Velocity\ of\ the\ pink\ ball=2\ m/s\\Initial\ Momentum\ of\ the\ pink\ ball=0.3*2=0.6\ kg\ m/s\\\\Total\ momentum\ of\ both\ the\ balls\ 'Before\ Collision'=1+0.6=1.6\ kg\ m/s

Hence,\\Lets\ now\ consider\ the\ case\ of\ the\ two\ balls\ 'After\ Collision':\\\\Mass\ of\ the\ green\ ball=0.2\ kg\\Final\ Velocity\ of\ the\ green\ ball=0\ m/s\\Final\ Momentum\ of\ the\ green\ ball=0\ kg\ m/s\\\\Mass\ of\ the\ pink\ ball=0.3\ kg\\Final\ Velocity\ of\ the\ pink\ ball=v\ m/s\\Final\ Momentum\ of\ the\ pink\ ball=0.3*v=0.3v\ kg\ m/s\\\\Total\ momentum\ of\ both\ the\ balls\ 'After\ Collision'=0+0.3v=0.3v\ kg\ m/s

As\ we\ know\ that,\\Through\ the\ law\ of\ conservation\ of\ momentum,\\In\ an\ isolated\ system:\\Total\ Momentum\ Before\ Collision=Total\ Momentum\ After\ Collision\\Hence,\\1.6=0.3v\\v=\frac{1.6}{0.3}=5.33\ m/s

5 0
3 years ago
Two wires of the same metal having the same cross-
USPshnik [31]
The answer is true

Step by step explanation:
3 0
3 years ago
Read 2 more answers
Two teams are playing tug of war. Team A pulls to the right with a force of 450 N. Team B pulls to the left with a force of 415
motikmotik

Answer:

35 N to the right.

Explanation:

450 is going to the right so you subtract what is going against it. Which gives you 35. And because 450 is bigger than 415, it'll be going to the right.

6 0
2 years ago
Do you like genetic engineering explain even if there is no answer box still answer in the commets
liubo4ka [24]

Answer:

yes it is so awesome

Explanation:

4 0
3 years ago
Other questions:
  • Does fire use energy??
    10·1 answer
  • You are standing 2.5 m directly in front of one of the two loudspeakers shown in the figure. they are 3.0 m apart and both are p
    10·1 answer
  • Precision measurements of the acceleration due to gravity show that the acceleration is slightly different in different location
    13·2 answers
  • Which equation represents a combustion reaction? Pb(NO3)2 + 2HCl → PbCl2 + 2HNO3 2SO2 + O2 → 2SO3 2C2H6 + 7O2 → 4CO2 + 6H2O Ca +
    10·2 answers
  • A trip is taken that passes through the following points in order
    10·1 answer
  • A security guard walks at a steady pace, traveling 190 m in one trip around the perimeter of a building. It takes him 260 s to m
    7·1 answer
  • What is the energy of a photon that has the same wavelength as an electron having a kinetic energy of 15 ev?
    6·1 answer
  • A car travels 40 miles north in 30 minutes and then turns around and travels 20 miles south in 30 minutes. The distance travelle
    14·1 answer
  • Why is it that when riding in a car, you don't feel like you're moving?
    9·1 answer
  • A bowler once measured that she can throw the bowling ball with a speed of 15miles/hour.If it takes 3 seconds from the ball to t
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!