A single railway carriage of mass 2000 kg is pulled along a smooth, level track by a resultant force of 5000 N. There is no other force acting along the tra...
Question 1 Report
A single railway carriage of mass 2000 kg is pulled along a smooth, level track by a resultant force of 5000 N. There is no other force acting along the track. Using F = ma, find the acceleration of the carriage.
Answer Details
The acceleration is 2.5 m/s\(^2\). From \( F = ma \), \( a = \dfrac{F}{m} = \dfrac{5000}{2000} = 2.5\ \text{m/s}^2 \). The value 0.4 m/s\(^2\) inverts the fraction \( \left( \tfrac{2000}{5000} \right) \), 2500 m/s\(^2\) and 400 m/s\(^2\) come from misplacing the decimal or multiplying, so only \( \tfrac{5000}{2000} \) gives the correct 2.5 m/s\(^2\).
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