How to compute kinetic energy and gravitational potential energy?
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How to compute kinetic energy and gravitational potential energy?
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Answer:
For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2
Explanation:
Key terms
Term (symbol) Meaning
Kinetic energy Energy from translational or rotational motion. SI units of joules (\text JJstart text, J, end text).
Translational motion Linear motion of a rigid body. SI units of \dfrac{\text m}{\text s}
s
m
start fraction, start text, m, end text, divided by, start text, s, end text, end fraction.
Translational kinetic energy (KKK) Energy due to linear motion of a rigid body. SI units of joules (\text JJstart text, J, end text).
Equations
Equation Symbols Meaning in words
K = \dfrac{1}{2}mv^2K=
2
1
mv
2
K, equals, start fraction, 1, divided by, 2, end fraction, m, v, squared KKK is translational kinetic energy, mmm is mass, and vvv is the magnitude of the velocity (or speed) Translational kinetic energy is directly proportional to mass and the square of the magnitude of velocity.
\Delta K =\dfrac{1}{2}m (v^2 - v_0^2)ΔK=
2
1
m(v
2
−v
0
2
)delta, K, equals, start fraction, 1, divided by, 2, end fraction, m, left parenthesis, v, squared, minus, v, start subscript, 0, end subscript, squared, right parenthesis \Delta KΔKdelta, K is change in kinetic energy, and vvv and v_0v
0
v, start subscript, 0, end subscript are the magnitudes of the final and initial velocity Change in kinetic energy is the difference between the final and initial kinetic energy.
Answer:
KE = 1/2 mv²
Explanation:
KE - kinetic energy
KE = 1/2 mv²
m - mass
v - velocity
ung sa mass is ididivide mo siya by 2 kaya naging
1/2 m
tas ung v is multiple by itself
ex: 30m/s² × 30 m/s² = 900
example:
What is the kinetic energy of a 40 kg object moving at 10 m/s?
mass - 40 kg
velocity - 10 m/s
KE = 1/2 mv²
KE = 1/2 (40 kg)(10 m/s)²
KE = (20)(100)
KE = 2000 J
J - joules (unit for energy)
yan lang masasagot ko hehe sry