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lorasvet [3.4K]
3 years ago
15

A moving car initially has kinetic energy K. The car then moves in the opposite direction with four times its initial speed. Wha

t is the kinetic energy now
Physics
1 answer:
Liula [17]3 years ago
6 0

If initial speed was v, Kinetic energy was K = 1/2mv^2

When speed will be 4v, KE will be:

= 1/2 m (4v)^2

=1/2m 16 v^2

=16K

Now kinetic energy will become <em>1</em><em>6</em><em> </em><em>times</em><em> </em><em>of</em><em> </em><em>initial</em><em> </em><em>Kinetic</em><em> </em><em>Energy</em>

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Answer:

i found this provided by the San Francisco 49ers (found on Khan Academy)

Explanation:

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4 0
3 years ago
A taxi starts from Monument Circle and travels 5 kilometers to the east for 5 minutes. Then it travels 10 kilometers to the sout
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3 years ago
A 4kg object has a momentum of 12 kg*m/s, what is the objects velocity?
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8 0
2 years ago
An airplane takes off from Dallas Texas to fly to new york city traveling ne for 2,760 km the Same plane returns that day to Dal
Kipish [7]
<h3>Answer</h3>

1104 km/hour

<h3>Explanation</h3>

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Formula to use

<h3>distance = speed x time </h3>

Speed the plane took from Dallas to New York

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speed = 2760 / 2

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Speed the plane took from New York to Dallas (ROUND TRIP)

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3 years ago
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