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
solniwko [45]
3 years ago
13

A 0.4-kg toy train car moving forward at 3 m/s collides with and sticks to a 0.8–kg toy car that is traveling in the opposite di

rection at –2 m/s. What is the size and direction of the final velocity of the two cars
Physics
1 answer:
Gemiola [76]3 years ago
4 0

Hey there!

Seems like you're looking for the size and direction to the final velocity of the two cars. To find it, you must solve it like this.

0.4 kg(3 m/s) + 0.8kg(–2 m/s) = 1.2 kg m/s -1.6 kg m/s = –0.4 kg m/s

–0.4 kg m/s = 1.2 kg(v) = (–0.4 kg m/s)/(1.2 kg) = v = –0.33 m/s


So, the cars are traveling at -0.33 m/s in the direction of the second car.


Hope this helps


<em>Tobey</em>

You might be interested in
A. What is an electric field line?
Lorico [155]

Answer:

Please see below as the answers are self-explanatory

Explanation:

a)

  • A electric field line is an imaginary line, which has the property that the electric field vector is tangent to it at any point. It starts from positive charges (since the electric field by convention it has the direction of the trajectory that would take a positive test charge, so it always goes away from positive charges) and ends in negative charges.

b)

  • Since the potential difference between two points represents the work per unit charge needed for a charge to move between these points, a equipotential surface is the one over which it is not needed to do work to move a charge from any point on the surface to any other point, which means that all points are at the same potential.

c)

  • Equipotential surfaces are not necessarily physical surfaces, they can be defined in vaccum for instance.
  • As an example, any spherical surface concentric with a point charge, is an equipotential surface, and  it can be a real surface or a fictitious one.
7 0
3 years ago
Describe the interactive roles and statuses of individuals and groups in your conmunity
marta [7]
Social groups<span> that we as </span>individuals<span> belong to, we have a </span>status<span> and a </span>role<span> to fulfill.</span>Status<span> is our relative social position within a </span>group<span>, while a </span>role<span> is ... Because of this </span>status<span>, he is expected to fulfill a </span>role<span> for his children ... These make it a crime to hire and promote people because they are </span>your<span> relatives.
put me as a brainiest </span><span />
5 0
3 years ago
A liquid thermometer can be used to test for fevers. When body temperature increases,
aleksandr82 [10.1K]

Answer:A

Explanation:

Hdjfjdjfjr

5 0
3 years ago
A car moves in a straight line such that for a
jeyben [28]

Answer:

s = 90 m

a = 56 m/s²

Explanation:

I will ASSUME that your equation is silly as it reduces to V = 11t which is constant, and that you mean V = 9t² + 2t

Position is the integral of differential velocities

s = \int\limits^3_0 {9t^2 + 2t} \, dt

s = 3t³ + t² | from 0 to 3

s = 3(3)³ + 3² - (0) = 90 m

acceleration is the derivative of velocity

a = v' = 18t + 2

a(3) = 18(3) + 2 = 56 m/s²

3 0
3 years ago
Which has a larger resistance, a 60 W lightbulb or a 100 W lightbulb? Which has a larger resistance, a 60 W lightbulb or a 100 W
Luba_88 [7]

You really can't tell.

Power = I^2 × R = V^2 / R ( unit in Watt)

For P = I^2 × R

Where we have P directly proportional to R, increase in Power leads to increase in R

So if we have 100 will have higher resistance

For P = V^2/R

Power is inversely proportional to resistance.

So increase in Power leads to decrease in resistance.

60 watt will have a higher resistance.

5 0
3 years ago
Other questions:
  • What force holds the earth-moon system together?
    5·2 answers
  • The image shows a roller coaster.
    10·1 answer
  • Dos cargas puntuales están fijas en el eje x: q1 = 6.0µC está en el origen, O, con x1 = 0.0 cm, y q2 = –3.0 µC está situada en e
    12·1 answer
  • Which statement about solubility is true?
    14·1 answer
  • A 143-g baseball is flying through the air with a speed of 180 km/hr just after it is hit by a bat. If its velocity is at an ang
    7·1 answer
  • A 0.250 kg block on a vertical spring with spring constant of 4.45 ✕ 103 N/m is pushed downward, compressing the spring 0.080 m.
    14·1 answer
  • A ball is thrown straight up into the air with an initial speed of 8.0 m/s. How long does it take for the rocket to reach its hi
    11·2 answers
  • What are the answers according to Henry's classification.
    7·1 answer
  • A ball is throw vertically upwards with a speed of 20ms,calculate the maximum height reach(g=10)
    12·1 answer
  • Which sentence correctly uses a comma to separate coordinate adjectives?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!