Answer:
(c) 0.20 m/s²
Explanation:
Using The equation of motion,
V² = u² + 2gs...................... equation 1
Where V = final velocity, u = initial velocity, g = gravitational acceleration,
s = distance.
Making g the subject of the equation in equation 1 above,
g =( V² - u²)/2s............................ equation 2
Where V= 8 m/s, u = 5 m/s, s= 100 m.
g = (8²-5²)/(2×100)
g = (64-25)/200
g = 39/200
g =0.195 m/s²
g ≈ 0.20 m/s².
The gravitational acceleration = 0.20 m/s²
Answer:
any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.
Explanation:
The average acceleration in the first 10 seconds of the journey is 2 m/s²; option B.
<h3>What is acceleration?</h3>
Acceleration is the rate of change of velocity with time.
<h3>Acceleration = change in velocity/time</h3>
From the graph;
Acceleration in first seconds = 20 - 0/5 = 4 m/s²
Acceleration in second 5 seconds = 0
Average acceleration = 4 + 0/2
Average acceleration = 2 m/s²
In conclusion, average acceleration is the average of the final and initial acceleration.
Learn more about acceleration at: brainly.com/question/14344386
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As we know that when a charged capacitor is connected across a resistor then its voltage will decreased
This is known as discharging of capacitor
as we know that the equation of discharging is given as

here we know that


t = 3.90 s
now from above equation we have


as we know that




so capacitance is 0.75 micro farad