Final answer:
The student is walking at a speed of approximately 32 m/min from the classroom to the library.
Step-by-step explanation:
To find the speed at which the student is walking from the classroom to the library, we need to calculate the distance and time. Distance = 30 m and Time = 57 seconds. We can use the formula: Speed = Distance / Time. Plugging in the values, we get: Speed = 30 m / 57 s. Simplifying the fraction, we get approximately 0.526 m/s.
To convert this speed to meters per minute, we multiply by 60 seconds (1 minute has 60 seconds). So, the speed in m/min is: 0.526 m/s * 60 s = 31.57 m/min. Rounded to the nearest whole number, the speed is approximately 32 m/min.
Therefore, the answer to the question is c) 30 m/min.