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
viktelen [127]
3 years ago
10

A person riding on the roof of a freight train throws a ball forward. (a) If we ignore air drag and relative to the ground, is t

he ball moving faster or slower when the train is moving than when it is standing still? (b) Relative to the freight car, is the ball moving faster or slower when the train is moving than when the train is standing still?
Physics
1 answer:
mina [271]3 years ago
4 0

Answer:

Explanation:

A ball is thrown in forward direction by a person who is riding on the roof of the moving train.

-->If you neglected the air drag and relative to the ground, then the velocity of the ball is equal to the sum of the velocities of ball and the train.

-->Hence, the ball is moving faster.

-(b) Relative to the freight car, the ball moves at the same speed irrespective of train

You might be interested in
Give an example of a force applied to an object that does not change the object's velocity. Why does the object's velocity not c
Xelga [282]

Answer:

A chair at rest on the floor has two forces acting on it its own weight that pulls it downward and the floor pushing upward on the chair, both of these forces are acting on it but the net force is 0, so the chair remains at rest and its velocity stays at 0.

8 0
2 years ago
The diagram shows two charged objects, X and Y.
masya89 [10]

The missing diagram is in the attachments.

Answer: X: positive Y: positive

Explanation: Electric field is a vector quantity, which means it can be represented by a vector arrow: the arrow points in the direction of electric field and its length represents the magnitude at a given location. There are another representation of the electric field called electric field lines, <u>in which the line points away from a positively charged source and towards a negatively charged source</u>. This occurs because it follows a pattern, where the lines points in the direction that a positive test charge would have if it is accelerating on the line.

Analyzing the diagram, it can be observed that the lines are pointing away from both of the charged objects. Therefore, both X and Y are <u>positively charged</u>.

4 0
3 years ago
Read 2 more answers
Your teacher gives you a piece of cardboard with two pinholes on it, saying that they are separated by 205 μm ± 3%. In order to
wlad13 [49]

Answer:

m,lkj,mkn,njn

Explanation:because she is telling you to do a project

7 0
3 years ago
Which of the following is a subsurface event takes place during the rock cycle
alukav5142 [94]

Answer:

The answer is A. Cementing...

Explanation:

hope this helps

4 0
3 years ago
Read 2 more answers
I need this fast can you help me o give 12 points
Elanso [62]
Water as it's the highest specific heat capacity
Hope this helps x
7 0
3 years ago
Read 2 more answers
Other questions:
  • A 15-kg ball is tossed up into the air. The ball is 2 meters off the ground traveling 4 m/s. What is the potential energy? A. 29
    13·1 answer
  • Is there more potentioal energy at the top of bottom of a ramp?
    5·1 answer
  • A 1.41 µF capacitor charged to 51 V and a 2.49 µF capacitor charged to 31 V are connected to each other, with the two positive p
    14·2 answers
  • Data: Atom Element Protons Neutrons Electrons Net Charge Mass Number 1 2 3 4
    11·1 answer
  • how do you find the uncertainty of a single measurement? For example, I am trying to find the uncertainty of 26 grams. ​
    7·1 answer
  • Which statement is true?
    15·2 answers
  • When the distance between two masses is doubled, the gravitational attraction between
    10·1 answer
  • A valid hypothesis must have test for proving what?
    10·1 answer
  • Find preposition of the following lines
    9·1 answer
  • A string is waved up and down to create a wave pattern with a wavelength of 0.5 m. If the waves are generated with a frequency o
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!