A bus is moving at a speed of 72 km/h. On applying brakes it

Comes to rest in 5 second. Find the acceleration and distance

covered by the bus?
Please help me!

1
plz mark as best....
Its incorrect , the conversion of 72km/h into m/s is 20 m/s but yours is 259.2 m/s
hey...i m sorry...bt nw it is crct...

Answers

2014-06-24T17:38:57+05:30
U=initial speed=72km/h=20 m/sec.
v=final speed  =0 km/h
time=t= 5 sec.

v=u+at
v-u=at= v-u/t=a
-20/5= -4 m/sec^2 = deacceleration

now using the eqn:-

S=ut+1/2 a t^{2}

S=20*5 +  \frac{1}{2} (-4) * 5*5

S=100 - 50 =50 m.

after editing
dats ol...
finally ans. comes....nd it may be hlpful for u..



2 5 2
kk
hey sorry
now its correct
yah now its correct thanx
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