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3 years ago

Movement of a stationary object it's called what?

1 answer:

7 0

APPARENT MOTION- the sensation of seeing movement when nothing actually moves in the environment, as when two neighbouring lights are switched on and off in rapid succession.

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A skydiver accelerates from REST at 9.8 m/s² for the first 5m of their fall. Calculate their final speed. (Give your answer to 2

Kaylis [27]

Answer:

The final speed is 9.89 m/s.

Explanation:

Initial speed of skydiver is 0 as it was rest.

Acceleration of the skydiver is 9.8 m/s²

It accelerates for the first 5 m of their fall.

It is required to find their final speed. Let v is the final speed. It can be calculated using third equation of motion.

$v^2-u^2=2as$

Here, u = 0

a = 9.8 m/s²

s = 5 m

$v=\sqrt{2gs} \\\\v=\sqrt{2\times 9.8\times 5} \\\\v=9.89\ m/s$

So, the final speed is 9.89 m/s.

5 0

4 years ago

Efficiency is ?

elena-14-01-66 [18.8K]

It is b) because you need to use your energy efficient for working

6 0

4 years ago

Read 2 more answers

While john is traveling along a straight in interstate highway, he notices that the mile marker reads 242 mm. John travels until

Tresset [83]

Complete Question

While john is traveling along a straight in interstate highway, he notices that the mile marker reads 242 km. John travels until he reaches the 147 km marker and then retraces his path to the 161 km marker. What is John's resultant displacement from the 242 km marker? How far has he traveled answer in units of km

Answer:

The resultant displacement $\Delta x _{1 , 3} = 81 \ km$

The total distance traveled by john is $x_t =109 \ km$

Explanation:

From the question we are told that

The first position of john from the finish point is $x_1 = 242 \ km$

The second position of john from the finish point is $x_2 = 147 \ km$

The third position of john from the finish point is $x_3 = 161 \ km$

Generally the displacement from the 242 km marker is mathematically represented as

$\Delta x _{1 , 3} = x_1 - x_3$

Here we used $x_3$ instead of $x_2$ because $x_3$ is further than $x_2$ from the finish point

=> $\Delta x _{1 , 3} = 81 \ km$

Generally the total distance traveled by John is mathematically evaluated as

$x_t = [x_1 - x_2 ] + [x_3 - x_2]$

=> $x_t = [242 - 147 ] + [161 - 147]$

=> $x_t =109 \ km$

8 0

3 years ago

What combination of things happen on earth that helps make wind, and the weather on earth? (Please list at least two factors, an

Westkost [7]

Answer:

There are six main components, or parts, of weather. They are temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness. Together, these components describe the weather at any given time. These changing components, along with the knowledge of atmospheric processes, help meteorologists—scientists who study weather—forecast what the weather will be in the near future.

8 0

3 years ago

While playing a scavenger hunt game, Anthony walks 48.0 m to the south and then walks 12.0 m to the west. What single straight-l

Alenkasestr [34]

As these are distances created by moving in a straight line, using a trigonometric analysis can solve the missing single straight-line displacement. Looking at the 48m and 12m movements as legs of a triangle, obtaining the hypotenuse using the pythagorean theorem will yield us the correct answer.
This is shown below:

c^2 = 48^2 + 12^2
c = sqrt(2304 + 144)
c = sqrt(2448)
c = 49.48 m

To obtain the angle at which Anthony walks 49.48, we obtain the arc tangent of (12/48). This is shown below:

arc tan (12/48) =14.04 degrees.

Therefore, Anthony could have walked 49.48 m towards the S 14.04 W direction.

4 0

3 years ago