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
larisa86 [58]
3 years ago
11

Indiana jones (83.5 kg) is running 3.75 m/s when he jumps in a stationary 312 kg mine cart. what is their joint velocity afterwa

rd? PLEASE HELP ME
Physics
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

Answer:

.7917 m/s

Explanation:

This is a conservation of momentum question. You have an object initially at rest (cart) so that object is initially at 0 momentum. Indiana Jones is 83.5 kg and running 3.75 m/s so he starts with a momentum of 313.125 kg * m/s because momentum is equal to mass * velocity. Once the person jumps in the cart, the cart and the person can be considered one object and by conservation of momentum, the momentum of the Indiana-cart system is equal to 313.125 kg * m/s. By that, we can set that momentum equal to the combined mass * joint velocity. So 313.125 = (83.5kg + 312kg) * joint velocity. Then just solve for the velocity. The answer should be smaller than the intial velocity of the person of 3.75 m/s because the mine cart is HUGE at 312kg.

You might be interested in
Explain how folded mountain ranges form
aleksandrvk [35]
<span>Folded mountains form because two tectonic plates move towards each other at a convergent plate boundary pushing the land up forming a mountain.

Hope this helps!!

</span>
6 0
3 years ago
Read 2 more answers
SCIENCE&lt;3:: will give brainliest! :)
Alex777 [14]

Answer:

Option two

Explanation:

im smort

7 0
2 years ago
Read 2 more answers
Please help really easy worth 20
vovangra [49]

Answer:

Stationary

20N

Explanation:

From the graph, we see that the body traveling is on a fixed position. Therefore, it is a stationary body.

The graph given is a position - time curve.

 This curve depict a body changing position with given time.

Since the line of the curve is on a single position, the body is not changing position with the passage of time therefore, it is a stationary object.

B. 20N

From Newton's third law of motion we understand that "action and reaction force are equal but oppositely directed".

 Since the person is exerting a force of 20N on the balance.

So, the reaction force by the balance is 20N upward.

4 0
3 years ago
The velocity of a car is 65 m/s and it’s mass is 2515 kg. What is it’s KE?
Aloiza [94]
<span>Example Problems. Kinetic Energy (KE = ½ m v2). 1) The velocity of a car is 65 m/s and its mass is 2515 kg. What is its KE? 2) If a 30 kg child were running at a rate of 9.9 m/s, what is his KE? Practice Problems. IN THIS ORDER…. Page 2: #s 6, 7, 8, 5. Potential Energy. An object can store energy as the result of its position.</span><span>
</span>
4 0
3 years ago
Read 2 more answers
A wire runs left to right and carries a current in the direction shown.
Step2247 [10]

Answer:

The direction of the magnetic field at point Z; Into the screen

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • A school's new pump can fill the swimming pool in 2 hours, and the old pump takes 5 hours. What is the time required in hours to
    15·1 answer
  • Jenna can run 9 km in 1 hour. If she runs at that speed for 30 minutes, how far will she go? *
    8·1 answer
  • The whole body metabolic rate of a bottlenose dolphin is 8000kcalsday. The dolphin weighs 190kg. What is the mass specific metab
    13·1 answer
  • The smallest shift you can reliably measure on the screen is about 0.2 grid units. This shift corresponds to the precision of po
    12·1 answer
  • The genetic material of the new bacteria is usually
    11·1 answer
  • If the wavelength of a beam of light is decreased what happens to the momentum of the photons
    12·1 answer
  • Which model is most similar to that of Aristarchus?
    5·2 answers
  • A runner exerts a force of 234 Newtons against the ground while using 1100 Watts of power. How long does it take them to run a d
    11·1 answer
  • 1 gram of radium is reduced by 3.1 mg in 5 years by alpha decay.
    7·1 answer
  • Which of the following occurs during the evolution of a star?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!