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Path traced by a moving particle in space is called trajectory of the particle. Shape of trajectiry is decided by the forces acting on the particle. When a coordinate system is associated with a particle motion, the curve equation in which the particle moves `[y=f(x)]` is called equation of trajectory. It is just giving us the relation among x and y coordinates of the particle i.e. the locus of particle. To find equation of trajectory of a particle, find first x and y coordinates of the particle as a function of time eliminate the time factor. In above the velocity `(i.e. (dvec(r))/(dt))` at `t=0` is :-A. `2bhat(j)`B. `ahat(i)`C. `(a-2b)hat(i)`D. None of these |
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Answer» Correct Answer - B `(dvec(r))/(dt)=ahat(i)-2bt hat(j)` at `t=0, (dvec(r))/(dt)=ahat(i)` |
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