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
Mariulka [41]
3 years ago
11

A toy train is pushed forward and released at Xi = 4.0 m with a speed of 2.5 m/s. It rolls at a steady speed for 2.0 s, then one

wheel begins to stick. The train comes to a stop 7.7 m from the point at which it was released.
What is the train's acceleration after its wheel begins to stick?
Physics
2 answers:
Fittoniya [83]3 years ago
8 0
I don't think that 4m has anything to do with the problem. anyway. here. A___________________B_______C where A is the point that the train was released. B is where the wheel started to stick C is where it stopped From A to B, v=2.5m/s, it takes 2s to go A to B so t=2 AB= v*t = 2.5 * 2 = 5m The train comes to a stop 7.7 m from the point at which it was released so AC=7.7m then BC= AC-AB = 7.7-5 = 2.7m now consider BC v^2=u^2+2as where u is initial speed, in this case is 2.5m/s v is final speed, train stop at C so final speed=0, so v=0 a is acceleration s is displacement, which is BC=2.7m substitute all the number into equation, we have 0^2 = 2.5^2 + 2*a*2.7 0 = 6.25 + 5.4a a = -6.25/5.4 = -1.157 so acceleration is -1.157m/(s^2)
marta [7]3 years ago
6 0

Answer:

a = -1.16m/s^2

Explanation:

Given

Initial speed u = 2.5 m/s

Final speed v = 0

Distance traveled S = 7.7 m

Duration t = 2.0 s

Solution

Distance traveled before the wheel got stuck

d = ut\\\\d= 2.5 \times 2\\\\d = 5 m

Distance traveled after wheel got stuck

S'  = S - d\\\\S' = 7.7-5\\\\S' = 2.7 m

Acceleration

v^2 = u^2 + 2as'\\\\0 = 2.5^2 + 2 \times a times 2.7\\\\a = -1.16m/s^2

You might be interested in
50 POINTS!
zysi [14]

<h3>No:1</h3>

The object is moving with constant or uniform acceleration and in average speed

<h3>No:-2</h3>

The object is de accelerating

<h3>No:-3</h3>

The object deaccelerated and came to rest so fast.

<h3>No:-4</h3>

The object moves slowly first then accelerated.

<h3>No:-5</h3>

The object accelerated at first so fast then move with constant acceleration then again accelerated .

7 0
2 years ago
Do you want robot referees in your favorite class?
jeka94

Answer:

Sounds cool.. but what do they do?

Explanation:

5 0
3 years ago
Read 2 more answers
A car is traveling south at a speed of 69 miles per hour and then begins traveling west but continues traveling at the same spee
alexandr1967 [171]
Velocity
Because velocity is speed with direction. In this scenario, the speed has not changed, but the direction did.
8 0
3 years ago
In which position is it winter in North America? *
Dominik [7]

Answer:

position 4

Explanation:

if the north is tilted away it gets no sunlight, so its winter

6 0
3 years ago
Read 2 more answers
What are the characteristics of high energy wave lengths
Darya [45]
The characteristics of high energy wave length are:
- High Frequencies
- Short wave length
And in term of color, it will be located on the red spectrum.

3 0
3 years ago
Other questions:
  • In a plant cell where is sunlight converted to stored energy where does photosynthesis occur
    10·2 answers
  • Gold is used to make a super thin layer on the visors of astronauts' helmets because of which property in particular?
    6·1 answer
  • What could be a possible explanation why tectonic plates do not all move in the same direction
    9·1 answer
  • 7. A pool cue ball moving at 2.1 m/s east collides in a straight line with the eight ball at rest. Find the velocity of the eigh
    7·2 answers
  • When are all the forces acting upon an object balanced?
    11·1 answer
  • 8
    15·1 answer
  • What is a tension force
    15·1 answer
  • Why is it impossible to create a perpetual motion machine?
    7·1 answer
  • Which forces are shown on a free body diagram?
    15·1 answer
  • Which of the following statements describes an interaction between the geosphere and biosphere?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!