Question

8. A trein is travelling at a speed of 90 km/h. Brakes are applied so as to produce a uniform
acceleration of -0.5 m/sec. Find how far the train will go before coming to rest ​

Answer 1

Answer:

Step-by-step explanation:

u (initial velocity)=90km/hr

To convert it into m/s= 90*5/18

=25m/s

v (final velocity)= 0 as car stops

Acceleration= -0.5 m/s square

Distance=?

Time=0 -25/-0.5

= 50 seconds

S= ut+1/2 at square

= 25*50+1/2*-0.5*(50)2

=1250-625

=625m

Hope it helps

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