Question

a train is traveling at a speed of 90 km per hour brakes are applied so as to produce uniform acceleration of - 0.5 m per second square find how far the train will go before it is brought to rest

Answer 1

given; a= -0.5 m/s2,  u=90 km/hr=25 m/s

                                     v=0, s=?

                  2as=v2-u2

                    s=v2-u2/2a

                            =0^2-625/2*-1/2

                             s=625m