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CBSE Class 9 Answered

Hello sir, Which would have greater effect on kinetic energy of an object ? Whether doubling the mass of the object or doubling the velocity of the object ? plesae explain me the above question briefly. thank you.  
Asked by seeni2005 | 07 Oct, 2018, 11:47: AM
answered-by-expert Expert Answer
Kinetic energy, K = (1/2)m×v2  ................(1)
 
m is mass and v is velocity.
 
if we double the mass, Kinetic energy  = (1/2)×2m×v2 = 2K
 
if we double the velocity, Kinetic energy  = (1/2)×m×(2v)2 = 4K
 
Hence doubling the velocity is getting greater effect, because kinetic energy becomes 4 times of its initial value
Answered by Thiyagarajan K | 07 Oct, 2018, 05:37: PM
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