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
Misha Larkins [42]
2 years ago
11

15) A 328-kg car moving at 19.1 m/s in the +x direction hits from behind a second car moving at 13 m/s in the same direction. If

the second car has a mass of 790 kg and a speed of 15.1 m/s right after the collision, what is the velocity of the first car after this sudden collision
Physics
1 answer:
kolbaska11 [484]2 years ago
5 0

Answer:

Explanation:

Given that,

Mass of first car

M1= 328kg

The car is moving in positive direction of x axis with velocity

U1 = 19.1m/s

Velocity of second car

U2 = 13m/s, in the same direction as the first car..

Mass of second car

M2 = 790kg

Velocity of second car after collision

V2 = 15.1 m/s

Velocity of first car after collision

V1 =?

This is an elastic collision,

And using the conservation of momentum principle

Momentum before collision is equal to momentum after collision

P(before) = P(after)

M1•U1 + M2•U2 = M1•V1 + M2•V2

328 × 19.1 + 790 × 13 = 328 × V1 + 790 × 15.1

16534.8 = 328•V1 + 11929

328•V1 = 16534.8—11929

328•V1 = 4605.8

V1 = 4605.8/328

V1 = 14.04 m/s

The velocity of the first car after collision is 14.04 m/s

You might be interested in
what happens to the gravitational force when the distance between them stays the same and the mass of both objects is doubled
Dimas [21]

Answer:

The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.

Explanation:

7 0
3 years ago
How does a bicycles kinetic energy change when it slows down?
-Dominant- [34]
The kinetic energy decreases 
7 0
3 years ago
PLEASE EXPLAIN.
kvasek [131]
Explain a police role, and how important it is. also you can explain a mayor's role and how important it is...

A police's role in the community is to protect us and make sure that everyone is following the rules. it is important for a police to be there so we can be safe. Their status is fair enough. Another Example is a mayor. a mayor's job is to improve the city/ the community. His status is high. There are many people around us that help us, each with a different status. 

**Tell me if you need more
8 0
3 years ago
Convert 150 decameters to decimeters. Enter the answer.​
kotykmax [81]

Answer:

15,000 decimeters

Explanation:

1 decameter = 100 decimeters

150 * 100

15,000

Best of Luck!

5 0
3 years ago
What is the magnitude of g at a height above Earth's surface where free-fall acceleration equals 6.5m/s^2?
Tom [10]

The magnitude of 'g' at a place is expressed in terms of
the acceleration due to gravity.

You have said that the gravitational acceleration at that place
is 6.5 m/s².  So THAT's the magnitude of 'g' right there.

4 0
3 years ago
Other questions:
  • A major part of the greenhouse effect is that it involves the absorption of the earth's outgoing radiation by atmospheric gases.
    5·1 answer
  • 18. A 2.0-ohm resistor is connected in a series with a 20.0 -V battery and a three-branch parallel network with branches whose r
    10·2 answers
  • Why can't you trust the law of gravity? (RIDDLE)
    10·2 answers
  • The angular speed of the rotor in a centrifuge increases from 420 to 1420 rad/s in a time of 5.00 s. (a) Obtain the angle throug
    7·2 answers
  • The field of physics which deals with the study of probability waves that describe the motion and dynamics of particles with mas
    6·1 answer
  • A driver of a car traveling at -15m/s applies the brakes, causing a uniform acceleration of +2.0m/s2. If the brakes are applied
    14·1 answer
  • PLZ HELP
    7·1 answer
  • In the southern hemisphere the summer solstice occurs when the sun is
    5·1 answer
  • Of the ball is
    9·1 answer
  • Liam wants to determine if foam is a good insulator. He decides to connect wires to two ends of a battery and then connect one w
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!