First slide

Kinetic energy

Question

If the linear momentum of a body is increased by 50%, its KE will increase by:

Easy

A

50%
B

100%
C

125%
D

150%

Solution

K = $\frac{p^{2}}{2 m} \Rightarrow \frac{k' - k}{k} \times 100 % = \frac{1 . 5^{2} - 1}{1} \times 100 % = 125 %$

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