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(a) (i) State one of the Newton’s law of motion.
(ii) A body resting on a horizontal surface is given an initial velocity V so that it slides on the surface for some distance before coming
to a stop.
Table 1 shows the distance d moved by the body of various values of V.
Given that #V^2# = 20μd where μ is a constant for the surface, plot an appropriate graph and use it to determine μ.
(b) A train of mass 200 tonnes starts from rest and accelerates uniformly at #0.5 ms^-2#.
Determine its momentum after moving 100m.