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Grade: 12
        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.
3 years ago

Answers : (2)

Shaswata Biswas
132 Points
							Heree more than one options seems to be correct. For A - @ cannnot remain positive for all values of 0_ 4 at some point of its path.
						
3 years ago
Shaswata Biswas
132 Points
							Sorry the full text didn`t seem to appear. For option A - @ cannot remain +ve for all values of 0_ 4 at sime point of its path.
						
3 years ago
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  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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