A train of mass 400 tonnes, moving on horizontal track with constant acceleration, has speeds of 40 and 80 km/h at the beginning and end of two-minute interval. If the force of the engine is 50,000 N, find the resistance per tonne of the train's mass.

Question

shamim · Answer

i can solve it. u can knock me when u r online

anonymous · Answer

Could you explain the solution?

shamim · Answer

can u calculate acceleration a

shamim · Answer

a=(v-u)/t

anonymous · Answer

You mean 80-40/2?

shamim · Answer

ya

shamim · Answer

but u hv to convert unit from km/h to m/s

shamim · Answer

t=120sec

shamim · Answer

tell me the value of acceleration a

anonymous · Answer

(22,22-11,11)/120=0,09 m/s2. If I am right.