Resolving Physics Question

September 17, 2006

Equations of Linear Motion with Uniform Acceleration

Filed under: Uncategorized — physic @ 3:51 pm
 
 

The various equations of linear motion of an object with uniform acceleration are given as follows:

s=( u+v / 2)t … < 1 >                                                                                         v=u+at … < 2 >                                                                                           s=ut+at²/2  … < 3 >                                                                                         v²=u²+2as … < 4 >

where,

s =displacement                                                                                                      u =initial velocity                                                                                                      v final velocity                                                                                                          t =time taken                                                                                                             a =acceleration

The question,

A train is moving at a velocity of 25 ms-1 , and it brakes with a deceleration of 2 ms-2 before it stops. Find

a) the time taken for the train to stop

b) the braking displacement of the train 

 
 

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