help me

A karate expert breaks a stack of bricks with his bare hand. If the force applied is 520 newtons and the impact time is 0.5 × 10ȳ seconds, what is the value of impuls

I assume

$F = 520\ N$

$t = 0.5 \cdot 10^{-3} \ s$

$p = \text{impuls in}\ Ns$

$\begin{array}{rcl} p &=& F\cdot t\\ p &=& 520\ N \cdot 0.5 \cdot 10^{-3} \ s\\ p &=& 520\cdot 0.5 \cdot 10^{-3} \ Ns\\ p &=& 520\cdot 0.0005 \ Ns\\ p &=& 0.26 \ Ns\\ \end{array}$

i dont know how to work it out