Question

A bus retards uniformly at a rate of 3m/s and stops in 10 second with what velocity bus was travelling

Answer 1

v=u+at,
 u=v-at
Where v=0,a=-3m/s2,t=10 s
 u=v-at
u=0-(-3×10)
u=30 m/s

Answer 2

Let acceleration of bus =-3m per s
Let final velocity (v) =0
Time taken =10 s
Using first equation of motion
V =U+AT
0=u +-3*10
0=u-30
-u=-30
u =30m per s
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