You need to get to class, which is 282 meters away. you can only walk in the hallway at about 2.0 m/s (if you go any faster, you'll be caught or running).
how much time will it take to get to your class?

Time, t = 141 seconds

Explanation:

Given that,

Distance between the class and the person, d = 282 m

Speed of the person, v = 2 m/s

We need to find the time taken by the person to get to your class. Let the time taken is t. The speed of the person is given by :

t = 141 seconds

So, the time taken by the person to get to your class is 141 seconds. Hence, this is the required solution.

a and c

c is 100% but i am confused in a