diff --git a/lab6/predkosc.h b/lab6/predkosc.h
new file mode 100644
index 0000000000000000000000000000000000000000..4d7b86a57b8c05f6ce6fb9991d69f076bef640ed
--- /dev/null
+++ b/lab6/predkosc.h
@@ -0,0 +1,7 @@
+#include <math.h>
+
+float predkosc(int m,int r){
+    float v = sqrt((2*0.00000000006674*m)/r);
+    printf("Predkosc ucieczki to %.2f", v);
+}
+