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# A railway car of mass 20 tonne moves with an initial speed of 54 km h-1. On applying brakes, a constant negative acceleration of 0.3 ms-2 is produced. (a) What is the braking force acting on the railway car? (b) In what time it stops?

Tutor

F/W=a/g Given Mass 20 tonnes= 20X1000X9.81Kgis weight a=0.3 /s2 g=9.81 F=6000Kgf read more

F/W=a/g        Given Mass 20 tonnes= 20X1000X9.81Kgis weight

a=0.3 /s2

g=9.81

F=6000Kgf

Teacher

F/W=a/g Given Mass 20 tonnes= 20X1000X9.81Kgis weight a=0.3 /s2 g=9.81 F=6000Kgf read more

F/W=a/g        Given Mass 20 tonnes= 20X1000X9.81Kgis weight

a=0.3 /s2

g=9.81

F=6000Kgf

Teacher

F/W=a/g Given Mass 20 tonnes= 20X1000X9.81Kgis weight a=0.3 /s2 g=9.81 F=6000Kgf V=U+at uwill get time read more

F/W=a/g        Given Mass 20 tonnes= 20X1000X9.81Kgis weight

a=0.3 /s2

g=9.81

F=6000Kgf      V=U+at  uwill get time

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19/06/2020
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