Question

A particle moves according to the law x=r cos $\frac{π}{2}$ The distance covered by it in the time interval between t=0 and t=3s is.

• A. r
• B. 2r
• C. 3r
• D. 4r

Answer 1

Answer: (C)

3r

Answer 2

The correct option is (C) : 3r