Does the Bullet Stop Midair and Does the Falling Monkey Get Hit by the Dart?

  • Thread starter physicszman
  • Start date
  • Tags
    Confusing
In summary, the bullet moves twice as fast away from the train as it does when it's fired. The zoologist's dart will hit the monkey when they hit the ground.
  • #1
physicszman
39
0
Any help is appreciated!

1)A man standing on a railroad flatcar moving at 1000ft/s to the left fires a bullet, whose muzzle velocity is 1000 ft/s in the opposite direction. What does an observer on the ground see teh bullet do?

*I think he sees the bullet fire away at 2000 ft/s in the opposite direction

2) A zoologist fires a tranquilizing dart directly at a monkey in a tree. At that very instant the monkey let's go and falls. Will the dart hit the monkey?

*I yes because the dart will hit the monkey when they hit the ground.


Thanks
 
Last edited:
Physics news on Phys.org
  • #2
Let's do one at a time.

Think about the situation BEFORE the gun fires. If the train is moving WEST at 1000 ft/sec. relative to the ground what is the speed and direction of the rifle relative to the ground ?
What is the speed and direction of the bullet relative to the ground ?

Now, the rifle fires. The bullet leaves the rifle heading EAST at 1000 ft/sec relative to the muzzle.

What is the bullet's speed and direction relative to the ground ?
 
  • #3
Next question:

When the monkey let's go, what happens to him? What is the direction and rate of his acceleration?

When the dart leaves the muzzle, what is the direction and rate of its acceleration (not its velocity)?

Now would you like to reconsider your answer?
 
  • #4
Hey, sorry for the late reply I had a english class.

1) I believe that the speed relative to the ground will be 0 ft/s because 1000 ft/s West and 1000 ft/s east would cancel each other out. So the perso on the ground would see the bullet not moveing?

2) The answer is yes, it will hit the monkey, Both the monkey and the bullet fall at -9.8m/s^2.

Thanks, please let me know if i messed up...again.
 
  • #5
#1:
So the person on the ground will see the bullet suspended motionless in the air?






(Hint: see your answer to #2)
 
  • #6
haha, ok, let me try again. I think he will see the bullet move twice as fast away from the train.
 
  • #7
No, your previous answer (not moving) was closer to the truth. Almost, but not quite right.

(What happens to the monkey and the dart?)
 
  • #8
They hit the ground at the same time.
 
  • #9
Right, but that's not what I'm talking about now. They don't hang suspended in the air, right?
 
  • #10
The observer is going to see the bullet drop!
 
  • #11
Eureka!

I think you've got it.
:smile:
 
  • #12
Thanks agian for all the help!
 

Related to Does the Bullet Stop Midair and Does the Falling Monkey Get Hit by the Dart?

1. What makes a question "simple" but confusing?

A question can be considered "simple" if it is short and straightforward, but can still be confusing if it requires deeper thought or a complex answer.

2. How can I avoid asking confusing questions?

To avoid asking confusing questions, make sure to be clear and specific in your wording. Avoid using jargon or technical terms that may not be understood by everyone. Also, try to break down your question into smaller, simpler parts if possible.

3. Can a simple question be subjective?

Yes, a simple question can still be subjective. For example, asking "What is your favorite color?" may seem like a simple question, but the answer can vary greatly from person to person.

4. Why do people sometimes avoid asking simple questions?

People may avoid asking simple questions because they fear looking unintelligent or not wanting to bother others with what they perceive as a "basic" question. They may also avoid asking simple questions if they feel like they should already know the answer.

5. How can I answer a simple question without being condescending?

To answer a simple question without being condescending, use a friendly and approachable tone. Avoid using complex language or talking down to the person asking the question. Remember that everyone has different levels of knowledge and it's important to be patient and understanding when answering questions.

Similar threads

  • Introductory Physics Homework Help
Replies
1
Views
2K
  • Introductory Physics Homework Help
Replies
4
Views
4K
  • Introductory Physics Homework Help
Replies
4
Views
3K
  • Introductory Physics Homework Help
Replies
8
Views
3K
  • Introductory Physics Homework Help
Replies
4
Views
10K
  • Special and General Relativity
Replies
17
Views
1K
  • Introductory Physics Homework Help
Replies
4
Views
3K
  • Introductory Physics Homework Help
Replies
2
Views
1K
  • Introductory Physics Homework Help
Replies
2
Views
2K
  • Introductory Physics Homework Help
Replies
13
Views
22K
Back
Top