If a train going 60 m/s hits the brakes and it takes the train 1 minute and 40 seconds to come to a complete stop, what is the train's acceleration?

Answer 1

First, we need to convert the time taken to stop in seconds:

1 minute and 40 seconds = 60 seconds (1 minute) + 40 seconds = 100 seconds

Now, we can use the formula for acceleration:

Acceleration = (final velocity - initial velocity) / time

Given:
Initial velocity (Vi) = 60 m/s
Final velocity (Vf) = 0 m/s
Time (t) = 100 seconds

Acceleration = (0 m/s - 60 m/s) / 100 s
Acceleration = -60 m/s / 100 s
Acceleration = -0.6 m/s^2

Therefore, the train's acceleration is -0.6 m/s^2. The negative sign indicates that the train is decelerating.