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
svlad2 [7]
3 years ago
10

Two blocks with a mass of 2 kg collide in an elastic collision. The initial velocity of Block 1 is 10 m/s. Block 2 is traveling

at 2 m/s in the same direction as Block 1. What is the final momentum and kinetic energy of Block 2?
A final momentum: 2 kg x m/s, final kinetic energy: 1 J
B. final momentum: 20 kg x m/s, final kinetic energy: 10 J
C final momentum: 90 kg x m/s, final kinetic energy: 20 J
D. final momentum: 22 kg x m/s, final kinetic energy: 101 J​
Physics
1 answer:
pentagon [3]3 years ago
4 0

Answer:

p = 20 kg•m/s

KE = 100 J

Explanation:

In an elastic collision of identical masses, the two masses will exchange momentums. Therefore Block 1 initially moving at 10 m/s will be moving at 2 m/s, and Block 2 will go from 2 m/s to 10 m/s

momentum = mv = 2(10) = 20 kg•m/s

KE = ½mv² = ½(2)10² = 100 J

Unfortunately, your answer selection does not have this answer as an option.

You might be interested in
A 1500 kg car travelling at 25 m/s collides with a 2500 kg van which had
sertanlavr [38]
I’m not sure I think if you google it it should pop up or go on quizlet sorry
6 0
3 years ago
What causes a satellite to move tangentially to a circular path?
yawa3891 [41]

Explanation : We know that two forces acting on the satellite.

The speed of the satellite and the force of the gravity on the satellite then the result , the satellite moves around the earth in a circular motion.

A satellite to move tangentially to a circular path, while revolving around the circular path because the centripetal force is acting on it.

So, we can say gravity is responsible for the motion of the satellite in a circular path.

5 0
3 years ago
Read 2 more answers
A gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3 , undergoes a constant-pressure expansion at
Gnom [1K]

Answer:

Work: 4.0 kJ, heat: 4.25 kJ

Explanation:

For a gas transformation at constant pressure, the work done by the gas is given by

W=p(V_f -V_i)

where in this case we have:

p = 2 bar = 2\cdot 10^5 Pa is the pressure

V_i = 0.1 m^3 is the initial volume

V_f = 0.12 m^3 is the final volume

Substituting,

W=(2\cdot 10^5)(0.12-0.10)=4000 J = 4.0 kJ

The 1st law of thermodynamics also states that

\Delta U = Q-W

where

\Delta U is the change in internal energy of the gas

Q is the heat absorbed by the gas

Here we know that

\Delta U = +0.25 kJ

Therefore we can re-arrange the equation to find the heat absorbed by the gas:

Q=\Delta U + W = 0.25 kJ + 4.0 kJ = 4.25 kJ

7 0
3 years ago
An object with an acceleration of –10 m/s² is _____.
Sidana [21]

The answer might be B because the value is negative, and negative could mean slowing down.

7 0
3 years ago
Question 7 (1 point)
Temka [501]

Answer:

Forms over water, warm humid air mass, it's a polar air mass

Explanation: I think that's right sorry if it's not..

GL! :)

4 0
2 years ago
Other questions:
  • A picture shows the letter "O" made from a piece of plastic. Where is the center of gravity? USE THE DEFINITION OF THE CENTER OF
    10·1 answer
  • If a man walks 17m east and then 17m south , the magnitude of the man's displacement is
    15·2 answers
  • How would the forces in a nucleus change if the number of neutral particles in the nucleus were increased?
    8·2 answers
  • What is the main element that stars are made of
    14·2 answers
  • When starting a foot race, a 70.0-kg sprinter exerts an average force of 650 n backward on the ground for 0.800 s. what is his f
    13·1 answer
  • Two cars A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by x????(?
    14·2 answers
  • Convert 285,000 milliliters to decaliters.​
    13·2 answers
  • The winning time for a 500.0 mile circular race track was 3 hours and 13 minutes. What was the driver’s average speed? What was
    5·1 answer
  • ITS EASY TRUST ME!!!!
    5·2 answers
  • What type of system would allow light to enter and exit, but would keep any
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!