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
Vesna [10]
4 years ago
7

You are in a train traveling on a horizontal track and notice that a piece of luggage starts to slide directly toward the front

of the train. From this observation, you can conclude that this train is:__________
A) Slowing down
B) Slowing down and changing direction
C) Speeding up and changing direction
D) Speeding up
E) Changing Direction
Physics
1 answer:
Sindrei [870]4 years ago
8 0

A very interesting observation, to be sure.

If the train is traveling forward, then it is slowing down.

If the train is traveling backward, then it is speeding up.

You might be interested in
A ball is thrown vertically down from the edge of a cliff with a speed of 4 m/s, how high is the cliff, if it took 12 s for the
Vesna [10]

Answer:

The height of the cliff from which the ball was dropped from is 224.4m.

\overline{v}={\frac{\Delta x}{\Delta t}}

Given the data in the question;

Initial velocity of the ball;

Time taken by the ball to reach the ground;

Distance or Height of the cliff from which the ball was thrown from;

To get the height of the Cliff, we use the Second Equation of Motion:

Where s is the distance or height,  is the initial velocity, t is the time and a is the acceleration. Since the ball was thrown down from a certain height (cliff), its is now under the influence of gravity. acceleration due to gravity;

Hence, the equation becomes

We substitute the given values into the equation

Therefore, the height of the cliff from which the ball was dropped from is 224.4m

Explanation:

3 0
3 years ago
Read 2 more answers
A student throws a ball upward with a velocity of 35 m/s. What is the acceleration of the ball as it rises to the top of its arc
lora16 [44]

Answer:

The acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

Explanation:

Let suppose that maximum height of the arc is so small in comparison with the radius of the Earth.

Since the ball is launched upwards, then the ball experiments a free-fall motion, that is, an uniform accelerated motion in which the element is accelerated by gravity. Then, the acceleration experimented by the motion remains constant at every instant and position.

Besides, the gravitational acceleration in the Earth and, in consequence, the acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

7 0
3 years ago
an object tied to the end of the string moves in a circle . the force exerted by the string depends on the mass of the object it
otez555 [7]

Answer:Fc=mv^2/r

Explanation:

6 0
4 years ago
What was the name of the first living being to be put into orbit?.
Oduvanchick [21]
The first living being to make an orbital spaceflight around the Earth was the dog Laika, aboard the Soviet spacecraft Sputnik 2 on 3 November 1957.
8 0
2 years ago
An airplane went from 120 m/s to 180 m/s in 4.0 seconds. What was its acceleration?
scoundrel [369]
<span>15 m/s^2 The first thing to calculate is the difference between the final and initial velocities. So 180 m/s - 120 m/s = 60 m/s So the plane changed velocity by a total of 60 m/s. Now divide that change in velocity by the amount of time taken to cause that change in velocity, giving 60 m/s / 4.0 s = 15.0 m/s^2 Since you only have 2 significaant figures, round the result to 2 significant figures giving 15 m/s^2</span>
3 0
3 years ago
Other questions:
  • For an object that is moving with zero acceleration what does the speed vs time graph look like
    11·1 answer
  • Assume the radius of a neutron to be approximately 1.0×10−13 cm, and calculate the density of a neutron. [hint: for a sphere v=(
    7·1 answer
  • A 4 kg block is pulled with 5.6 N of force to the right. The block experiences 1.1 N of friction. What is the acceleration of th
    8·1 answer
  • What is the difference between sensation and perception?
    15·2 answers
  • A 0.060-kg ice hockey puck comes toward a player with a high speed. The player hits it directly back softly with an average forc
    10·1 answer
  • If Laura travels d d km along the circular ski trail, then the angle subtends an arc d 1.4 d1.4 radius lengths long (starting at
    11·1 answer
  • If you stand on a bathroom scale,the spring inside the scale compresses 0.50 mm, and it tells you your weight is 700 N. Now if y
    10·1 answer
  • Can anybody help me solve this problem? Thank you so much!
    6·1 answer
  • Complete the passage to describe the relationship between kinetic energy, internal energy, thermal energy, and
    14·2 answers
  • Listed below are ACTION forces. Tell the REACTION force.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!