Calculator increase in internal energy of the tie and spike

ANSWER:
1.24 joules
STEP-BY-STEP EXPLANATION:
Mass (m) = 0.63 kg
Speed (v) = 2.5 m/s
Absorbed percent (p) = 62.9%
The increase would be the product between the kinetic energy and the absorbed percent, we substitute and calculate as follows:
[tex]\begin{gathered} E=p\cdot K \\ \\ K=\frac{1}{2}\cdot m\cdot v^2 \\ \\ \text{ Therefore:} \\ \\ E=p\cdot\frac{1}{2}\cdot m\cdot v^2 \\ \\ \text{ We replacing} \\ \\ E=0.629\cdot\frac{1}{2}\cdot0.63\cdot2.5^2 \\ \\ E=1.24\text{ J} \end{gathered}[/tex]The increase in kinetic energy was 1.24 joules