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
djyliett [7]
3 years ago
14

A 2.0-kilogram ball traveling north at 4.0 meters per second collides head on with a 1.0-kilogram ball traveling south at 8.0 me

ters per second. What is the magnitude of the total momentum of the two balls after collision?
Physics
1 answer:
enyata [817]3 years ago
6 0

Answer:

We know the momentum after the collision MUST be equal to the momentum BEFORE the collision.  

Momentum is a VECTOR quantity having both magnitude and direction.  The first ball has momentum P =m*v = 2*4 = 8 at 90degrees.  The second ball has momentum P = 1*8 = 8 at -90 or 270 degrees.  They sum to zero when you perform vector addition.

Explanation:

You might be interested in
A student pushed a box 32.0 m across a smooth, horizontal floor using a constant force of 124 N. If the force was applied for 8.
Brilliant_brown [7]

The power developed is 500 W ( to the nearest Watt)

Power(P) is the rate at which work is done. Work done (W) is the product of the force applied on the object and the displacement (s) made by the point of application of the force.

P = \frac{W}{t}

W= F*s

Therefore,

P=\frac{F*s}{t}

Substitute the given values of force , displacement and time

F = 124 N,s = 32.0 m,t = 8.0 s

P =\frac{W*s}{t} =\frac{124N*22.0s}{8.0s} =496 W

Thus the Power can be rounded off to the nearest value of 500 W

3 0
3 years ago
Read 2 more answers
What is the formula for conservation of momentum
olga55 [171]

Answer:

The general equation for conservation of momentum during a collision between n number of objects is given as: [m i ×v i a ] = [m i ×v i b ] Where m i is the mass of object i , v i a is the velocity of object i before the collision, and v i b is the velocity of object i after the collision.

Explanation:

6 0
3 years ago
Which characteristic surface of the moon contains the same rock as the ocean floor
Ratling [72]
The answer is Maria or Lunar mare because they are both made of basalt. Hope this helps.
3 0
3 years ago
What is this?<br> Picture
miss Akunina [59]

Answer:

may be upside down alphabet :"T"

Explanation:

8 0
3 years ago
Read 2 more answers
Change in speed over a given period of time is
Dvinal [7]

Explanation:

Acceleration is the change in speed over a given time period

8 0
3 years ago
Read 2 more answers
Other questions:
  • En la Tierra, una balanza muestra que tu peso es 585 N.
    6·1 answer
  • Why does lithostatic pressure increase more rapidly with depth than hydrostatic pressure?
    7·1 answer
  • A force of 348.0 N is used to push a car 33.4 m horizontally in 3.21 s. Calculate the power developed.
    6·1 answer
  • A girl with mass m1 and a sled with mass m2 are on the frictionless ice of a frozen lake, a distance d apart but connected by a
    9·1 answer
  • Clouds in space can begin as what​
    5·1 answer
  • A sled is pushed with 30 Newtons and sliding friction is 10 Newtons find the net force on the sled​
    10·1 answer
  • An ice cream truck is going 25m/s to East. It accelerates to 40m/s in the same direction over 3s. What is its acceleration
    7·2 answers
  • A gold wire has a cross-sectional area of 1.0 cm^2 and a resistivity of 2.8 × 10^-8 Ω ∙ m at 20°C. How long would it have to be
    15·1 answer
  • Is the speed of Earth revolving around the sun changing?
    5·2 answers
  • If you are going to see which food dye diffuses fastest in water. Which variables do you measure How will you do this?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!