Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to 45 m/s. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train? (Round your answer to the nearest whole number.)
4 m/s2
5 m/s2
6 m/s2
7 m/s2
The acceleration of the train can be calculated using the formula:
acceleration = (final velocity - initial velocity) / time taken
Given that the initial velocity is 5 m/s, the final velocity is 45 m/s, and the time taken is 8 seconds, the calculation is:
acceleration = (45 m/s - 5 m/s) / 8 s
acceleration = 40 m/s / 8 s
acceleration = 5 m/s^2
Therefore, the acceleration of the train is 5 m/s^2.