How long does it take for a freely falling body to fall so that in the subsequent 1.3 seconds it falls $49.34 \mathrm{~m}$? 1[^0]


[^0]:    ${ }^{1}$ The acceleration due to free fall: $g=980.8 \frac{\mathrm{cm}}{\mathrm{sec}^{2}}$ (according to Gruber's determination, in Budapest $g=980.837 \frac{\mathrm{cm}}{\mathrm{sec}^{2}}$).