Rearrange the following equation (found in the section 'uniformly accelerated and projectile motion') to calculate how long it would take for an object to reach the ground when dropped from a height of 3.5m.
D = V₁t + ½at²
where:
D = Distance from ground (3.5m)
V₁ = Initial velocity (0)
t = time in flight
a = acceleration (9.81m/s²)
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