physics
posted by Anonymous .
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does the train travel while it is slowing down

physics 
Henry
V^2 = Vo^2 + 2ad
a=(V^2Vo^2)/2d=(9000)/7400=0.122 m/s^2
d2 = 30m/s * 410s = 12300 m.
d3 = (V^2Vo^2)/2a
d3 = (0900)/0.130 = 6923 m.
Respond to this Question
Similar Questions

PHYSICS
A train starts from rest and accelerates uniformly, until it has traveled 3 km and acquired a velocity of 20 m/s The train then moves at a constant velocity of 20 for 400 s. The train then slows down uniformly at 0.065 m/s2 until it … 
physics
a train starts from rest and accelerates uniformly at 100m/min^2 for 10 min.then it maintains a constant velocity for remaining 20 min.brakes are applied and train uniformly retards and comes to rest in next 5 min. a)the maximum velocity … 
physics
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, … 
physics
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, … 
physics
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, … 
physics
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, … 
physics
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, … 
physics
a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, … 
Science
A train starts from rest and accelerates uniformly, until it has traveled 3000 m and acquired a velocity of 24 m/s. The train then moves a constant velocity of 24 m/s for 430 s. The train then decelerates uniformly at 0.065 m/s², … 
Physics A level
A train starts from rest and then accelerates at a constant acceleration of 1.4ms2 for 10s. The train then moves with a constant velocity for a further 20s before the brakes are applied bringing the train to a stop with a constant …