Answer:
C. Streams on each side of the divide flow in opposite directions.
Explanation:
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Answer:
17.1
Explanation:
The distance ahead, of the deer when it is sighted by the park ranger, d = 20 m
The initial speed with which the ranger was driving, u = 11.4 m/s
The acceleration rate with which the ranger slows down, a = (-)3.80 m/s² (For a vehicle slowing down, the acceleration is negative)
The distance required for the ranger to come to rest, s = Required
The kinematic equation of motion that can be used to find the distance the ranger's vehicle travels before coming to rest (the distance 's'), is given as follows;
v² = u² + 2·a·s
∴ s = (v² - u²)/(2·a)
Where;
v = The final velocity = 0 m/s (the vehicle comes to rest (stops))
Plugging in the values for 'v', 'u', and 'a', gives;
s = (0² - 11.4²)/(2 × -3.8) = 17.1
The distance the required for the ranger's vehicle to com to rest, s = 17.1 (meters).
The new speed of the glider is 42.2 m/s.
The new speed of the glider can be calculated using the principle of the law of conservation of energy.
Note: Total energy of the glider before the dive = Total energy of the glider after the dive.
<h3> Formula:</h3>
- mv²/2+mgh = mV²/2 +mgH................ Equation 1
Simplifying the equation above,
make V the subject of the equation.
- V = √[(v²/2)+gh]-gH]............... Equation 2
<h3>Where:</h3>
- V = New speed of the glider
- v = initial speed of the glider
- h = initial height of the glider
- H = New height of the glider
- g = acceleration due to gravity.
From the question,
<h3>Given:</h3>
- v = 40 m/s
- h = 300 meters
- H = 200 meters
- g = 9.8 m/s²
Substitute these values into equation 2.
- V = √[(40²/2)+(9.8×300)-(9.8×200)]
- V = √(800+2940-1960)
- V = √1780
- V = 42.2 m/s.
Hence, The new speed of the glider is 42.2 m/s.
Learn more about speed here: brainly.com/question/4931057
What is wrong with the diagram is : ( 4 )
- The spot with the "maximum kinetic energy" should be on the lowest point of the roller coaster at the far left side on the bottom.
<h3>Gravitational potential energy vs kinetic energy</h3>
The maximum gravitational potential energy is located at the highest peak which the roller coaster attains while as the roller coaster comes down from the peak the gravitational potential energy decreases while the kinetic energy increases.
The point at which the roller coaster should attain it maximum kinetic energy should be at the lowest point ( i.e far left side of the bottom ).
Hence we can conclude that error in the diagram is the spot with the "maximum kinetic energy" should be on the lowest point of the roller coaster at the far left side on the bottom.
Learn more about Kinetic energy: brainly.com/question/25959744
