Answer: v = 20 m/s
Explanation: Solution:
Use the formula of Kinetic Energy and derive for v:
KE = 1/2 mv²
To find v:
v = √ 2 KE / m
= √ 2 ( 100000 J ) / 500 kg
= √ 400 m/s
= 20 m/s
Answer:
Cloudiness, Wind, and Precipitation. There's more effects produced because of force is more if the surface of the area is smaller, and less when the surface is larger. It also affects weather, it can be measured with a barometer.
Explanation:
Answer:
Acceleration: -9.8 m/s^2
Velocity: -28.2 m/s
Displacement: 143.1 m
Explanation:
The acceleration of gravity for any object close to earth is approximately -9.8 m/s^2.
Now, to find the velocity after 9 seconds, we can use a kinematics formula, where x is the final velocity:
<em>Final Velocity = Initial Velocity + Acceleration * Time</em>
x = 60 + -9.8*9
x = 60 - 88.2
x = -28.2
The velocity is -28.2 m/s.
Lastly, to find the displacement, we can use another kinematics formula, where y is the displacement:
<em>Displacement = (Final Velocity + Initial Velocity)/2 * Time</em>
y = (-28.2 + 60)/2 * 9
y = 143.1
The displacement is 143.1 meters.
Answer:
Hey there
I will give you the correct answer based on Wikipedia timelines.
You are correct (Copernicus, Brahe, Kepler, Newton)
Nicolaus Copernicus: 19 February 1473 – 24 May 1543.
Tyco Brahe: 14 December 1546 – 24 October 1601.
Johannes Kepler: 27 December 1571 – 15 November 1630.
I
Issac Newton: 4 January 1643 – 31 March 1727.
Brainly is GREATLY appreciated. it took me 30 minutes to get all the timelines!!!
Hello, use the formula:
Pe = mgh
Data:
Pe = Potential energy = ¿?
m = Mass = 48 kg
g = Gravity = 9,81 m/s²
h = Height = 7 m
Replacing according our data:
Pe = 48 kg * 9,81 m/s² * 7 m
Pe =3296,16 J
The potential energy of the skateboarder is 3296,16 Joules
