the kinetic engry has to be increased by 40 20 and 21 , 10 %
Answers
Answered by
1
Explanation:
t will be increased by 21%
Let the initial mass of the body be m and its velocity be v.
Initial momentum of the body = mv
Initial KE = mv^2/2
If the momentum increases by 10%, new momentum = mv + 10% of mv
= mv + 10/100mv
= mv + mv/10
=11mv/10
=m(11v/10)
New velocity = 11v/10
Increase in velocity = v/10
New KE = m(11v/10)^2/2
= 121/100mv^2/2
Increase in KE = 21%
Similar questions