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
xxTIMURxx [149]
3 years ago
15

A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The trains collide. After the collisi

on the green train moves with a speed of 3 m/s. What is the final momentum of the blue and green train combined?
A. 90 kgm/s
B. 110 kgm/s
C. 50 kgm/s
D. 200 kgm/s
Physics
2 answers:
Komok [63]3 years ago
8 0

Answer:

D. 200 kgm/s

Explanation:

Momentum is conserved.

Initial momentum = final momentum

(50 kg) (4 m/s) + (30 kg) (0 m/s) = final momentum

200 kgm/s = final momentum

irina1246 [14]3 years ago
7 0

Answer:

D. 200 kgm/s

Explanation:

A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The trains collide. After the collision the green train moves with a speed of 3 m/s. Therefore, the final momentum of the blue and green train combined is 200 kgm/s.

You might be interested in
Describe some precautions needed to increase the safety of participants in the sports of football.
OLga [1]
Football is a popular ball game and so many people play football these days. Been a contact game, there is no way players will not sustain injuries, but this can be reduced to the lowest point by taking some precautions.
The precautions that could be taken include the following:
Wear the right shoes.
Wear shin guard and soccer socks.
Use the right and properly fitted equipment [helmets, shoulder pads, googles, mouth-guards, etc]. All these equipment should be made for the soccer sport.

8 0
3 years ago
What is pulling force? Give any two examples.,
Dima020 [189]

Answer:

Push or Pull Forces - example

When you push against a wall the force that you exert is an example of a push force. When you pull a trolley car the force that you exert is an example of pull force.

8 0
3 years ago
Pleaseeeee help!! It’s due very soon
iris [78.8K]

Answer:

accelerated motion

Explanation:

a change in velocity (10 m/s to 50 m/s) over time (5 s) is called acceleration.

40/5 = 8 m/s²

6 0
2 years ago
Julian is having trouble coping with stress and setting goals. What is he most likely struggling with?
klio [65]
I would say Emotional health. Just because it is more sensable
6 0
3 years ago
Read 2 more answers
Jupiter is made of gas(like Saturn, Uranus and Neptune). What would happen to the strength of gravity if you
garik1379 [7]

Answer:

a) The strength of gravity decreases if one moved away from Jupiter

b) The strength of gravity increases if one fell into Jupiter

Explanation:

The gravitational attraction is given by Newton law of gravitation as follows;

Force \ (strength) \ of \ gravity = \dfrac{G \times M \times m}{R^2}

Where;

G = The universal gravitational constant = 6.67408 × 10⁻¹¹ m³/(kg·s²)

M = The mass of Jupiter

m = The mass of the nearby body

R = The distance between the centers of Jupiter and the body

From the equation, we have that the gravitational strength varies inversely with the square of the separation distance between two bodies

Therefore, as one moves away, R increases, and the strength of gravity reduces

Similarly as the body falls into Jupiter, R, reduces the gravitational strength increases.

7 0
2 years ago
Other questions:
  • On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. This satellite was injected int
    10·1 answer
  • 4. Both trains speed up all the time.
    14·1 answer
  • If v lies in the first quadrant and makes an angle Ï/3 with the positive x-axis and |v| = 4, find v in component form.
    5·1 answer
  • Give a graph of velocity v, time does a horizontal line represent ?​
    9·1 answer
  • jill picked 65 apples at a local orchard. 20% of the apples were green apples . How many apples did jill pick
    10·2 answers
  • Suppose that the speed of a ball moving in a horizontal circle is increasing at a steady rate. Is this increase in speed produce
    15·2 answers
  • Explain how refraction and prisms work.
    14·1 answer
  • What does it mean when wave
    10·1 answer
  • Despite the use of diffrent types of measurement in our country<br>​
    13·1 answer
  • I have to make a presentation about ultrasound diagnostic (it's for physics). Does someone know more about that topic? I need to
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!