a ball is dropped from rest at a height of 80 m above the ground. what is the speed just as it hits the ground?
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Δx=80
a=9.8
Vi=0 since its from rest, the initial velocity is 0.
80=0+.5(9.8)t²
t=16.33
You can use one of the big five equations: Vf=Vi+at
Vf=0+9.8(16.33)
Vf=160.034 m/s
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Is work done if you carry a book across the room at a constant velocity?a. No, the force applied is parallel to the direction of motion.b. Yes, the force applied is parallel to the direction of motion.c. No, the force applied is perpendicular to the direction of motion.d. Yes, the force applied is perpendicular to the direction of motion.
What are some examples of how we use science in or daily lives?
The force of gravity on you is greatest when you are standing _____.a. far above Earth's surface b. just above Earth's surface c. on Earth's surface
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Answer:
The Supreme Court decision in Marbury v. Madison established the principle of judicial review. This means that the Supreme Court has the power to declare laws or actions of the executive and legislative branches unconstitutional if they violate the Constitution. The decision was made in 1803 and is considered a landmark case in American law and politics. It established the idea that the judiciary is a coequal branch of government and has the responsibility to interpret the Constitution and ensure that the other branches of government do not exceed their constitutional authority.
Explanation:
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Answer:
As we know that heat given to a substance is given by the formula as
now we know that
now we know that aluminium and water both are of same mass and both are given same amount of heat so the value of Q and m will be same.
So here we can say that change in temperature depends inversely on the specific heat capacity.
So here if more specific heat capacity then there will be less change in temperature.
so we can conclude that since temperature of aluminium increases more so the specific heat capacity of aluminium will be less than that of water.
B. Total internal dispersion
C. A combination of refraction and reflection
D. Droplets in the air
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Answer:
Aluminium or Iron or any metal really
Explanation:
I did Gradpoint :)
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The natural frequency of the automobile in the vertical direction is 3.52 Hertz
Static equilibrium
Static equilibrium refers to the physical state in which the components of a system are at rest and the net force acting through the system is equal to zero.
In static equilibrium:
kd = mg
where;
k = effective spring constant of the spring.
mg = the weight of the car
d = static deflection.
also K = mω²
where ω is angular velocity
m is mass
Thus, mω²d = mg
ω²d = g
ω = √g/d
ω = g/d
ω = √9.8/0.02
ω = 22.15 rad/sec
Converting to Hertz unit for frequency
1 rad/s = 0.1591 Hertz
22.14 rad/s = 22.14 * 0.1591
22.14 rad/s = 3.525 hertz
Therefore, the natural frequency of the automobile in the vertical direction is 3.52 Hertz
Learn more about natural frequency at: brainly.com/question/11753773
Answer:Frequency = 3.525 Hertz
Explanation:In static equilibrium, kd =mg
Where k= effective spring constant of the spring.
mg= The weight of the car.
d= static deflection.
Therefore, w =SQRTg/d
w = SQRT 9.81/0.02
w= 22.15 rad/sec
Converting to Hertz unit for frequency
1 rad/s = 0.1591
22.15rad/s=?
22.15 × 0.1591= 3.525 hertz
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circular motion and its period of revolution are inversely proportional.