Question

Please answer these questions

Answer 1

(1)
-->Given,
     u=+6m/s
     a=-1m/s
-->To find:-
     (a)Distance travelled before coming to rest
     (b) Time taken?
SOLUTION:-
(a)Using the equation v²=u²+2aS (v=0 m/s since the body comes to rest)
     v²=u²+2aS
     0²=(+6)²+2*(-1)*S
     0 =36-2*S
     -36=-2*S
      S=36/2=18m
      Ans. (a)=18 m
(b)Now,
     S=18m
      t=?
       =Using v=u+at
                   0=6-1*t
                   t=6 sec
         Ans.(b)= 6sec

(2)
Since the motion is uniform the velocity will be still 10m/s
Hope that helps you