A particle of mass m moves on the x axis as follows : it starts from rest at t=0 from the point x=0, and comes to rest at t=1,at the point x=1 . No other information is available about its motion at intermediate times (0 is less than t is less than 1).If alpha denotes the instantaneous acceleration of the particle , then:A)alpha cannot remain +ve for all t in the interval 0 is less than equal to t is less than equal to1.B)|alpha|cannot exceed 2 at any point in its path.C)|alpha|must be greater than equal to 4 at some point in its path.D)alpha must change sign during the motion,but no other assertion can be made with the information given.

AnaNd RAo , 8 Years ago

Grade 12