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
valentina_108 [34]
3 years ago
15

A perfectly elastic collision occurs between a 15.0-kg mass traveling at 3.50 m/s and a 9.00-kg mass traveling at 2.35 m/s. if t

he final velocity of the 9.00-kg mass is 2.80 m/s, what is the final velocity of the 15.0-kg mass?
Physics
1 answer:
BaLLatris [955]3 years ago
5 0
Momentum is conserved in a collision. Momentum is mass*velocity, so you can find your answer by calculating initial and final momentums and setting them equal to each other.

15kg * 3.50 m/s + 9kg * 2.35 m/s = 73.65 kg m/s

73.65 = 9 * 2.8 + 15x

solve for x
x= 3.23

The final velocity is 3.23 m/s
You might be interested in
What is the average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8
Alex

Answer:

The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 \frac{m}{s}.

Explanation:

Velocity ​​is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. Then, the average velocity relates the change in position to the time taken to effect that change.

velocity=\frac{displacement}{time}

Velocity considers the direction in which an object moves, so it is considered a vector magnitude.

In this case, the displacement is 192 m and the time period is 8 s. Replacing:

velocity=\frac{192 m}{8 s}

Solving:

velocity= 24 \frac{m}{s}

<em><u>The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 </u></em>\frac{m}{s}<em><u>.</u></em>

3 0
3 years ago
At the time of the founding of the country, most Americans worked as
STatiana [176]

Answer:

Farmers

Explanation:

At the time of founding our country most soldiers in the revolutionary war were farmers who were inexperienced.

4 0
3 years ago
Read 2 more answers
A force of 10 N pressing on an area of 2m2. Calculate the pressure please answer fast it’s a test rn
musickatia [10]

Answer:

pressure=force/area

=10/2

5

Explanation:

3 0
3 years ago
Read 2 more answers
You need to connect your doorbell to a battery. You should select wire that will
Harlamova29_29 [7]
Run electrity through or is postive to the circuit
6 0
3 years ago
Which. describe newtons law of univesel gravitation
Fed [463]

Newton's law of universal gravitation, says that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Or in simple words, every particle in the world attracts each other to themselves, but the particle with most mass would attract with more force compared to a particle with less mass.

(<u><em>Please consider leaving a rate, a thanks and, a crown would be really appreciated! Thank you!</em></u>)

4 0
3 years ago
Other questions:
  • (a) Calculate the self-inductance (in mH) of a 55.0 cm long, 10.0 cm diameter solenoid having 1000 loops.
    14·1 answer
  • hello:) I don’t really understand this graph. I thought uniform acceleration means the velocity is constant so it’s a constant g
    9·1 answer
  • Why isn't a pendulum a wave
    6·1 answer
  • Two blocks collide on a frictionless surface. After the collision, the blocks sticktogether. Block A has a mass M and is initial
    11·1 answer
  • The uncertainty in position of a proton confined to the nucleus of an atom is roughly the diameter of the nucleus. If this diame
    6·1 answer
  • What is a crash cymbal
    12·1 answer
  • The symbol for the hydroxide ion is
    15·2 answers
  • A boy pushes his baby sister in a stroller that has a mass of 45,000 g. What is the acceleration on the stroller if the force is
    7·1 answer
  • A race car completes race in 10 minutes. Its average speed is 200km/hr. How long is the racetrack?
    12·1 answer
  • As a child walks, for a brief moment his entire weight is placed on one heel, which can be approximated as a small circle. Calcu
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!