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Sliva [168]
3 years ago
6

What is the formula of Kinetic Energy​

Physics
2 answers:
Andre45 [30]3 years ago
8 0

K.E = ½ mv²

Explanation:

The formula of Kinetic Energy

K.E = ½ mv²

Where,

m = mass of object

v = velocity of object

The <u>Standard Unit</u> of kinetic energy is <u>Joule</u>, while the <u>Imperial Unit</u> of kinetic energy is <u>foot-pound</u>

<u>-TheUnknown</u><u>Scientist</u>

Vesnalui [34]3 years ago
6 0

Answer:

\boxed{\bold { \large { \boxed {KE=\frac{1}{2} mv^2}}}}

Explanation:

Kinetic energy formula

\displaystyle KE=\frac{1}{2} mv^2

\displaystyle KE \Rightarrow \sf kinetic \ energy \ (J)

\displaystyle m \Rightarrow \sf mass \ (kg)

\displaystyle v \Rightarrow \sf velocity \ (m/s)

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Raindrops fall vertically at 7.5 m/s relative to the Earth. What does an observer in a car moving at 20.2 m/s in a straight line
Vilka [71]

Answer:

vDP = 21.7454 m/s

θ = 200.3693°

Explanation:

Given

vDE = 7.5 m/s

vPE = 20.2 m/s

Required:  vDP

Assume that

vDE to be in direction of - j

vPE to be in direction of i

According to relative motion concept the velocity vDP is given by

vDP = vDE - vPE     (I)

Substitute in (I) to get that

vDP = - 7.5 j - 20.2 i

The magnitude of vDP is given by

vDP = √((- 7.5)²+(- 20.2)²) m/s =  21.7454 m/s

θ = Arctan (- 7.5/- 20.2) = 20.3693°

θ is in 3rd quadrant so add 180°

θ = 20.3693° + 180° = 200.3693°

4 0
3 years ago
An automobile starter motor has an equivalent resistance of 0.055 Ï and is supplied by a 12.0 v battery which has a 0.0305 Ï int
LiRa [457]
12 V is the f.e.m. \epsilon of the battery. The potential difference that is applied to the motor is actually the fem minus the voltage drop on the internal resistance r:
\epsilon - Ir
this is equal to the voltage drop on the resistance of the motor R:
RI
so we can write:
\epsilon - Ir = RI
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8 0
3 years ago
What is the mass of a ball that has 29j of potential energy and is lifted 2.0m?​
Salsk061 [2.6K]

Answer:

1.48kg

Explanation:

Here,

potential energy (P.E) = 29j

height (h) = 2m

acceleration due to gravity(g) =

9.8m {s}^{ - 2}

mass(m) = ?

we know,

P.E = mgh

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6 0
1 year ago
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nikitadnepr [17]
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Decribe what must happen inside of an aluminum can in order for it to be attracted to a positively-charged and to a negatively-c
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Answer:

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