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
bezimeni [28]
3 years ago
10

1. Two blocks travel along a level frictionless surface. Block A is initially moving to the right at 5.0 m/s, while block B is i

nitially at rest. After the collision, block A continues to the right at 1.0 m/s. The mass of block A is 2.0 kg and the mass of block B is 3.0 kg. The positive x-direction is to the right. a. Find the final velocity of block B. Show your work. b. Is the sign of the change in momentum of block A as a result of the collision positive, negative, or is it zero
Physics
1 answer:
ad-work [718]3 years ago
6 0

Answer: 2.67 m/s

Explanation:

Given

Mass of block A  is m_a=2\ kg

mass of block B is m_b=3\ kg

The initial velocity of block A u_a=5\ m/s

the initial velocity of block B is u_b=0

After collision velocity of block A is v_a=1\ m/s

Conserving momentum

m_au_a+m_bu_b=m_av_a+m_bv_b\\\\2\times 5+3\times0=2\times 1+3\times v_b\\\\v_b=\dfrac{8}{3}=2.67\ m/s

The momentum of block A after the collision is P_a=2\times 1=2\ kg.m/s

Therefore, there is no change in sign.

You might be interested in
Redox reactions: Redox reactions: rarely involve enzymes. do not occur under physiological conditions. are characterized by one
Gnoma [55]

Answer:

are characterized by one substance gaining an electron while another substance loses an electron

Explanation:

Redox reaction in chemical reaction in which one substance gaining an electron while another substance loses an electron. This means that one element is oxidize by losing an electron while the other is reduced by gaining an electron. The one oxidized is called reducing agent while the one reduced is called oxidizing agent.

8 0
3 years ago
Voltage sources are used to sustain
Sindrei [870]
The movement of electric charge
5 0
3 years ago
Read 2 more answers
When an object falls, its:
Shkiper50 [21]

Answer:

Option D. is correct.

Explanation:

The object's mechanical energy refers to the sum of the potential and kinetic energies of the object. When an object falls, its potential energy (PE) decreases, and its kinetic energy (KE) increases. The increase in kinetic energy is exactly equal to the decrease in potential energy.

Option D. is correct.

5 0
3 years ago
PLEASE HELP ME I NEED THIS ASAP!!!!
Zina [86]

Answer:

loud bangs

Explanation:

the pots for cooking fell

3 0
3 years ago
Read 2 more answers
Spheres of Charge: A metal sphere of radius 10 cm carries an excess charge of +2.0 μC. What is the magnitude of the electric fie
nadezda [96]

To solve this problem we will apply the concept related to the electric field.  The magnitude of each electric force with which a pair of determined charges at rest interacts has a relationship directly proportional to the product of the magnitude of both, but inversely proportional to the square of the segment that exists between them. Mathematically can be expressed as,

E = \frac{kV}{r^2}

Here,

k = Coulomb's constant

V = Voltage

r = Distance

Replacing we have

E = \frac{(9*10^9)(2*10^{-6})}{((10+5)*10^{-2})^2}

E = 8*10^5N/C

Therefore the magnitude of the electric field is 8*10^5N/C

4 0
3 years ago
Other questions:
  • A child sets off the firecracker at a distance of 100 m from the family house. what is the sound intensity β100 at the house?
    10·2 answers
  • Please hurry! Only answer if you know the correct answer.
    13·1 answer
  • What kind of circuit
    13·1 answer
  • A light ray in air hits piece of quartz at a 39.0 deg angle. Inside the quartz, the light slows down to 2.06*10^8 m/s. At what a
    14·1 answer
  • 2 Points
    8·1 answer
  • Which law is this As you pedal your bicycle harder, the bicycle goes faster.
    8·1 answer
  • What's the difference between meteoroids, meteorites, and meteors?
    11·1 answer
  • How long would it take a 400 W motor to transfer 2000 J of energy <br> 5s<br> 50s<br> 0.2s<br> 0.02s
    7·1 answer
  • Direction is the length of a route between two points
    7·1 answer
  • How can food help an organism to maintain cells and grow?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!