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The kinetic energy of an object of mass m, moving with a velocity of 5 m/s is 25 J. What will be its kinetic energy when its speed is doubled? it is given here doubled not tripled
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Answered by
6
Answer:
The required kinetic energy is 100 J.
Step-by-step explanation:
Given :
The kinetic energy of an object of mass m, moving with a velocity of 5 m/s is 25 J.
To find :
the kinetic energy when its speed is doubled.
Solution :
Kinetic energy is the energy possessed by an object by virtue of its motion.
It's given by,
where
m is the mass of the object
v is it's speed
__________________
>> Kinetic Energy is directly proportional to square of the speed.
So,
KE₁ = 25 J
v₁ = 5 m/s
v₂ = 2v₁ = 2(5) = 10 m/s
Substituting,
The Kinetic Energy will be 100 J when speed is doubled.
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Step-by-step explanation:
find the square of 95 using identity (a+b)²=a²+2ab+b²find the square of 95 using identity (a+b)²=a²+2ab+b²
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