The motion of a particle along the x-axis is described by the following velocity function v(t)={:{((t^(3)+t^(2)+1),0 le t lt 3,"sec"),((2t+5),3 le t lt 5,"sec"),((t^(2)-6t),5 le t,"sec"):} where v is in m/sec and t is in second Which of the following statements is true ?

The motion of a particle along the x-axis is described by the followin

1.	The motion of a particle along the x-axis is described by the following velocity function v(t)={:{((t^(3)+t^(2)+1),0 le t lt 3,"sec"),((2t+5),3 le t lt 5,"sec"),((t^(2)-6t),5 le t,"sec"):} where v is in m/sec and t is in second Which of the following statements is true ?
Answer» INITIAL VELOCITY of the PARTICLE is zero Between `t=335` to `t=4.5sec`, the acceleration of particle is variable Between `t=7` to `t=100sec`, the acceleration-time graph will be a STRAIGHT line PASSING through origin None of the statements is correct Answer :D