Final answer:
Cassie's trip to her friend's house took approximately 146 seconds, calculated by dividing the distance (205 m) by her average speed (1.40 m/s).
Step-by-step explanation:
To calculate the time it took Cassie to walk to her friend's house, we use the formula for speed which is speed = distance / time. We know Cassie's speed and the distance to her friend's house, so we can rearrange the formula to solve for time: time = distance / speed.
Given:
Speed = 1.40 m/s
Distance = 205 m
We can calculate the time it took for Cassie to walk to her friend's house:
Time = 205 m / 1.40 m/s
Time = 146.43 seconds
Thus, it took Cassie approximately 146 seconds to get to her friend's house if we round to the nearest whole second. Looking at the options, the closest correct answer to Cassie's travel time would be 146 S (option a).