Question: The wheel of toy car rotates about axis. It slows down from 400 rps to 200 rps in 2s. Then its angular retardation in rads −2 is
(A) 200 𝜋
(B) 100
(C) 400 𝜋
(D) None of these
Answer: option (A)

Question: The wheel of toy car rotates about axis. It slows down from 400 rps to 200 rps in 2s. Then its angular retardation in rads −2 is
(A) 200 𝜋
(B) 100
(C) 400 𝜋
(D) None of these
Answer: option (A)