Calculated using the value \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\), the time interval required for an object released from rest at some arbitrary point \(\mathrm{A}\) above the ground to reach the ground is \(\Delta t\). If \(g\) were \(4.9 \mathrm{~m} / \mathrm{s}^{2}\), by what factor would \(\Delta t\) differ from the value calculated using \(g=9.8 \mathrm{~m} / \mathrm{s}^{2}\) ?