NCERT Solutions for Class 11 Science Work energy and power 4
Important Board Questions
Work energy and power
NCERT Books for Session 2022-2023
CBSE Board and UP Board
1 Marks Questions
The momentum of the body is doubled, what % does its K.E change?
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K.E. = p²/2ₘ when p is doubled K.E. becomes 4 times.
% Increase in K.E. = ∆K.E/ K.E X 100 = 4K.E – K.E / K.E x100
= 3 × 100 = 300%.