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bogdanovich [222]
3 years ago
14

A dog is walking at 2m/s and then begins to run at a speed of 6m/s. What is his acceleration if his total travel time is 2 secon

ds?
Physics
1 answer:
fiasKO [112]3 years ago
7 0
The formula for velocity vf = vi + at

First list your given information

2m/s Is your initial velocity (vi)
6m/s is you final velocity (vf)
2 seconds is your time (t)

Since you want the a for acceleration get a by itself

a = (vf-vi)/t

So a= (6-2)/2

a= 4/2

a=2

Now units

the units for acceleration are m/sx^{2}

2m/sx^{2}
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Answer:

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Are mass and volume related?: Mass and volume are two units used to measure objects. Mass is the amount of matter an object contains, while volume is how much space it takes up.We can say that the volume of the object is directly proportional to its mass. As the volume increases the mass of the object increases in direct proportion.

How can density of an object be determined?: If the mass of an object increases then its density increases because density is directly proportional to mass.

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Explanation:

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8 0
3 years ago
A student walks 31 m east, then 16 m west. Make east positive. What is their<br> displacement?
Marianna [84]
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A wave of frequency 90 mega in 3 micro seconds. Calculate its wave length. hertz travels 6 km​
gladu [14]

the wavelength is 2.2m

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2 years ago
When you drop a ball it accelerates downward at 9.8 m/s2. If you instead throw it downward, then its acceleration immediately af
damaskus [11]

Answer:

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6 0
3 years ago
A boat crosses a 200 m wide river at 3 ms-1, north relative to water. The river flows at 1 ms-1 as shown.
Vika [28.1K]

Answer:

3.16 m·s⁻¹ at an angle of 71.6°  

Explanation:

Assume that the diagram is like Fig. 1 below.

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1. Calculate the magnitude of the resultant

We can use the Pythagorean theorem (Fig. 2).

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R = √(10 m²·s⁻²) ≈ 3.16 m·s⁻¹

2. Calculate the direction of the resultant

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To an observer at point O, the velocity of the boat is 3.16 m·s⁻¹ at an angle of 71.6°.

 

8 0
3 years ago
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