Moving train - kinematics problem

AI Thread Summary
A 12 metric ton train moving at 72 KMH comes to a stop in 2 minutes, prompting a calculation of the force exerted during braking. To solve the problem, it is essential to convert all units to kilograms, meters per second, and seconds. The deceleration can be calculated using the formula a = v/t, assuming constant deceleration. Finally, applying F = ma will yield the required force. The discussion highlights the importance of unit conversion and proper application of kinematic equations in solving the problem.
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Homework Statement



A 12 metrick ton train is moving with a 72KMH velocity.when brakes It comes to rest in 2 mins.find the force caused by the force?

Homework Equations


F=ma
a=v/t


The Attempt at a Solution


didn't get the correct answer which is given on the answers page(only the answer not the steps)
 
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The steps are:

1) Transform everything in kg, m/s, s.
2) Find deceleration of train with equation 2 (assuming it is constant)
3) hopefully equation 1 will be all that is needed as your final question could use some work.
 


thank you...
 

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