Physics, 31.08.2020 01:01 ryleeyeagley03

A train goes 25000 m East in 1500 sec and then turns around and travels 29,000 m West for 1740 sec. Determine the distance, speed, displacement, and velocity.

Answers: 1

Show answers

Answers

Answer from: josephvaldez518

scalar d = 54000 m , v_average = 16,667 m / s

vector d = -4000 m , moved 4000 to the west

v_average = 0

Explanation:

his is a uniform motion exercise, but we must be careful with quantities that are scalars and vector quantities

The distance traveled is a scalar

d = d₁ + d₂

d = 25000 + 29000

d = 54000 m

the speed is a scalar, in the exercise it is not specified if the speed of each trajectory or the average speed. Therefore we will calculate the two

v₁ = d₁ / t₁

v₁ = 25000/1500

v₁ = 16,667 m / s

v₂ = 29000/1740

v₂ = 16,667 m / s

Since the two speeds are equal, the average speed is

v = (v1 + v2) / 2

v_average = 16,667 m / s

now let's calculate the displacement that is a vector, so it has direction in addition to modules

suppose the eastward direction is positive and the bold are vectors

d = d₁ - d₂

d = 25000 - 29000

d = -4000 m

this means that it moved 4000 to the west

velocity is a vector, we assume positive eastward movement

v₁ = 16,667 m / s

v₂ = - 16,667 m / s

v_average = (v1 -v2) / 2

v_average = 0

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Answer from: Quest

where’s the list ? the question is incomplete

Another question on Physics

Physics, 21.06.2019 19:30

Asample of a gaseous substance changes into a liquid

Answers: 1

Answer

Physics, 21.06.2019 20:10

Select the correct answer. anna will wear a black dress when she attends het cousin's wedding. which color(s) does the dress absorb? a. all colors b. no colors c. red and green d. white

Answers: 1

Answer

Physics, 22.06.2019 01:30

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Answers: 1

Answer

Physics, 22.06.2019 12:00

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

Answers: 2

Answer

You know the right answer?

A train goes 25000 m East in 1500 sec and then turns around and travels 29,000 m West for 1740 sec....

Questions