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Ira Lisetskai [31]
3 years ago
8

Does anyone know this stuff? I’m so confused already

Physics
2 answers:
mihalych1998 [28]3 years ago
6 0

Answer:

see below

Explanation:

This graph shows an object initially travels at a constant velocity for 4 seconds.....the velocity is the slope of the graph for these 4 seconds.  

   then it remains stationary from t = 4 to t =6  ...see the graph is flat (slope = 0   means no velocity) ...at position 3  

  at t = 6 it reverses course ....a negative velocity (steeper slope ...higher velocity)  until it reaches position 0 at t = 9  

These times are what I think I can see...the graph is kind of fuzzy.

Harlamova29_29 [7]3 years ago
4 0

Explanation:

A position versus time graph gives the position of an object at a certain point in time. The slope, also known as the derivative, will give the change in the position with respect to time. The slope will give you the instantaneous velocity of the object due to velocity being defined as the change in position over time

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If Anisa swims 85.4 yards in five minutes, how many meters will she swim in 70.0 seconds? ( use the metric system for this quest
Ira Lisetskai [31]

Answer : 18.22 meters

Explanation:

1 yard. = 0.9144 meters

85.4 yards = 78.08976 meters

1 minute = 60 seconds

5 minutes = 300 seconds

Speed of Anisa = distance / time

Speed of Anisa = 78.08976 meters / 300 seconds

Speed of Anisa = 0.26029 meters / second.

Distance travelled in 70 seconds = speed * 70

Distance travelled in 70 seconds = 0.26029 * 70 = 18.22 meters

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4 years ago
A wave with a period of three seconds travels at a speed of 12 m/s what is the wavelength of the wave
harkovskaia [24]

Answer:

<em>λ </em>= 0.28m

Explanation:

Equation used is <em>v = λf</em>, where <em>v</em> is velocity, <em>λ</em> is wavelength, and <em>f</em> is frequency

We need to find wavelength so rearrange the equation in term of wavelength.

<em>v = λf</em>

<em>λ = f/v</em>

We know that period is the inverse of frequency (f = 1/T), so lets substitute that into our equation

<em>λ = f/v</em>

<em>λ = (1/T)/v</em>

Plug in your the given values given in the question.

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<em>λ = (1/T)/v</em>

<em>λ</em> = (1/3)/12

<em>λ</em> = 1/36 = 0.2777777 = 0.28m

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