cameroon gce june 2019 Advance level pure mathematics with mechanics 3

The position vector of a particle P, of mass 6 kg, at time t seconds is r,
where r = [(18t – 4t3)i + t2j] m.
(a) Find the kinetic energy of P when t = 1. . (5 marks)
(b) Calculate the magnitude of the force acting On P when t = 2. (5 marks)
(c) Determine, to 2 decimal places, the value of t for which the velocity and the
acceleration vectors of P are at right angles . (3 marks)
2. A smooth sphere A, of mass 3m, moving on a smooth horizontal table with speed 4u, impinges directly on
another Smooth sphere B, of mass 2m, moving with speed u in the opposite direction to A.
restitution between A and B is e.
The coefficient of

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2 comments on “cameroon gce june 2019 Advance level pure mathematics with mechanics 3

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