Afugitive tries to hop on a freight train traveling at a constant speed of 5.2 m/s . just as an empty box car passes him, the fugitive starts from rest and accelerates at a = 1.3 m/s2 to his maximum speed of 6.1 m/s , which he then maintains. how long does it take him to catch up to the empty box car? what is the distance traveled to reach the box car? express your answer to two significant figures and include the appropriate units.

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.