Answer: 75seconds
Explanation:
Speed is the distance covered in metres per unit time.
Hence Speed = Distance / Time taken
Since Distance covered = 150 metres
Speed of Lindsay = 2m/s
Make Time taken the subject formula
Thus, Time taken = (Distance /speed)
Time taken = (150m / 2 m/s)
= 75 seconds
Thus, it will take Linsday 75 seconds to run down the hallway.