Mechanics> A train starts from rest and moves with a...

A train starts from rest and moves with a constant acceleration of 2m/s^2 for half a minute. The brakes are then applied and the train comes to rest in one minute after applying brakes. Find (a) the total distance moved by the train, (b) the maximum speed attained by the train and (c) the position of the train at the half the maximum speed.

Adil , 7 Years ago

Grade 11

2 Answers

Himanshu Rathour

Let maximum speed attained by train is v, distance covered is s while accelerating and S while deaccelerating.

v=0+2(30)

=60m/s

s=0+(1/2)(2)(900)

s=900m

0=60-a(60)

a=1m/s²

S=60(60)-½(60)²1

S=3600-1800

S=1800m

Last Activity: 7 Years ago

Himanshu Rathour

Sorry I misunderstood the c part so here is the answer to (c) part

Distance covered at half the maximum speed

30²=0+2(2)s₁

s₁=900/4

=225m

Last Activity: 7 Years ago

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Mechanics> A train starts from rest and moves with a...

Adil , 7 Years ago

Himanshu Rathour

Himanshu Rathour

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