Question : A particle moves 200 cm in the first 2s and 220 cm in the next 4s with uniform deceleration. The velocity of the particle at the end of 7s is
(A) 12 cms −1
(B) 11 cms −1
(C) 10cms −1
(D) 5 cms −1
Answer : option (C)
Solution :
A particle moves 200 cm in the first 2s and 220 cm in the next 4s with uniform deceleration. The velocity of the particle at the end of 7s is
with
no comment