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galina1969 [7]
3 years ago
10

To analyze the motion of a body that is traveling along a curved path, to determine the body's acceleration, velocity, and posit

ion. A motorcyclist travels around a curved path that has a radius of 250 ft . While traveling around the curved path, the motorcyclist increases speed by 1.05 ft/s2 . Part A - Finding the time interval for the motorcyclist to reach a given acceleration If the motorcyclist starts from rest, determine the time needed to reach an acceleration of 4.25ft/s2. Express your answer to three significant figures and include the appropriate units.
Physics
1 answer:
Brilliant_brown [7]3 years ago
6 0

Answer:

a^2 = ar^2 + al^2      where ar is the radial acceleration and al is the

linear acceleration - since vectors ar and al are at right angles

ar^2 = a^2 - al^2 = 4.25^2 - 1.05^2

ar = 4.12 ft/s^2

ar = V^2 / R     where ar is the radial acceleration

So V^2 = ar * R = 4.12 * 250 = 1030 ft^2/s^2

V = 32.1 m/s    the linear speed of the cycle

Also, V = al t   or t = V / al = 32.1 / 1.05 = 30.6 sec

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grandymaker [24]

Answer:

Depends.

Explanation:

Whether the object is going left or right, the speed will stay the same until friction eventually stops it. <em>However, </em>if, for example, we're talking about an object going straight before veering right, then yes, speed <em>does</em> matter. An object will normally have to speed up or slow down momentarily when changing direction to keep itself sustained on the ground.

So, honestly? It really depends on what we're talking about!

Hope this helped!

Source(s) used: None.

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3 years ago
PLEASEEE HELP, thank you :)
telo118 [61]

Answer:

The answer is B.

Explanation:

Given that the <em>current </em>(Ampere) in a series circuit is same so we can ignore it. We can assume that the total voltage is 60V and all the 3 resistance are different, 20Ω, 40Ω and 60Ω. So first, we have to find the total resistance by adding :

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Next, we have to find out that 1Ω is equal to how many voltage by dividing :

120Ω = 60V

1Ω = 60V ÷ 120

1Ω = 0.5V

Lastly, we have to calculate the voltage at R1 so we have to multiply by 20 (R1) :

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20Ω = 0.5V × 20

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3 years ago
I need help with this
lisabon 2012 [21]
A. Condensation

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2 years ago
What’s the four missing blanks in this diagram?
sergey [27]

Answer:

                                                    Matter

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Element                         compound         Homogenous           Heterogenous

7 0
3 years ago
What is the Difference between accuracy and precision ?<br>​
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Answer:

Accuracy measures how close results are to the true or known value. Precision, on the other hand, measures how close results are to one another.

6 0
2 years ago
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