4. What will be the kinetic energy if the velocity of an object is doubled? A The kinetic energy will not change. B. The kinetic energy will be twice its original energy. The Kinctic energy will be four times its originald. The kinetic enery will be half of them
Answers
Answer:
4 times initial KE
Explanation:
Kinetic energy is transferred between objects and can be transformed into other forms of energy. Kinetic energy is given by
KE =1/2mv2
where KE is the kinetic energy, m is the mass of the body
v is the velocity of the body
When speed doubles kinetic energy becomes
The change in the kinetic energy of the object as the speed changes is proportional to the square of the factor by which the speed changes. If the speed of the object becomes double, its kinetic energy changes to four times the initial kinetic energy.
If v becomes 2v, then
KE = ½m(2v)2
= 4—½mv2
= 4 times initial KE
Answer:
Explanation:
Kinetic energy is transferred between objects and can be transformed into other forms of energy. Kinetic energy is given by
KE =1/2mv2
where KE is the kinetic energy, m is the mass of the body
v is the velocity of the body
When speed doubles kinetic energy becomes
The change in the kinetic energy of the object as the speed changes is proportional to the square of the factor by which the speed changes. If the speed of the object becomes double, its kinetic energy changes to four times the initial kinetic energy.
If v becomes 2v, then
KE = ½m(2v)2
= 4—½mv2
= 4 times initial KE
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