Answer: Period = 2 seconds
Graph is shown below
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Explanation:
1 minute = 60 seconds
We have 30 revolutions every 60 seconds, so we can write the ratio
30 rev: 60 sec
Divide both parts by 30 to turn that "30 rev" into "1 rev"
30 rev: 60 sec
30/30 rev: 60/30 sec
1 rev : 2 sec
This tells us that each full revolution takes 2 seconds. This is the period of the ferris wheel. The period is the length of each cycle.
The cyclic or periodic nature of this motion heavily implies we'll be dealing with a sine or cosine function of some kind. Let's go with sine.
Side note: cosine is really a sine function in disguise (it's just a phase shifted version of it).
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The general sine curve equation is
y = A*sin(B(x-C)) + D
where
- |A| = amplitude
- B = 2pi/T with T being the period
- C handles phase shifts (left and right shifting)
- D handles vertical shifting, and y = D is the equation of the midline
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The wheel is 10 feet in diameter, so 10/2 = 5 is the radius. This is also the amplitude because it is the distance from the midline to either the highest point (10 ft) or lowest point (0 ft). So A = 5.
Since T = 2 is the period, this means,
B = 2pi/T
B = 2pi/2
B = pi
We don't have any phase shifts to worry about so C = 0.
The midline is D = 5 since this is halfway up
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Putting all the pieces together, we get this sine equation
y = A*sin(B(x-C)) + D
y = 5*sin(pi*(x-0)) + 5
y = 5*sin(pi*x) + 5
The graph is shown below.
x = time in seconds, y = height of the seat
Answer:
1. Arthur is about 54 meters away from Cameron.
2. Jamie is about 56 meters away from Cameron.
3. Arthur is closer to Cameron.
Step-by-step explanation:
We have been given the locations of Cameron (70,10), Arthur (20,30) and Jamie (45,60) on the the grid in meters.
1. To find the distances of Arthur and Jamie from Cameron we will use distance formula.






Therefore, the distance Arthur is about 54 meters away from Cameron.
2. Let us find the distance between Cameron and Jamie.


Therefore, Jamie is about 56 meters away from Cameron.
3. We can see that 56 is greater than 54, therefore, Arthur is closer to Cameron.
The answer is 35/2 (fraction)
Answer:
C is the answer
Step-by-step explanation: