Physics

To find the train's acceleration, we first need to convert the speed from kilometers per hour (km/h) to meters per second (m/s) and then use the formula for acceleration.

The initial speed is given as 72 km/h. To convert this to m/s:

Calculate acceleration

The train comes to a stop, so the final velocity is 0 m/s. The time taken to stop is t = 5 s. We can use the formula for acceleration:

Click "Show Answer" to reveal the answer and analysis