Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following
different paths as shown in given figure. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of path skate?
The distance between the initial and the final position of the particle is called the displacement. All the three girls reach from point P to Q. The diameter of the ground is the magnitude of displacement.
Radius = 200 m
Diameter = 200 x 2 = 400 m
Hence, the magnitude of displacement is 400 m for each girl. This magnitude is equal to the path skated by girl B.Answered by Abhisek | 1 year ago
(a) Show that for a projectile the angle between the velocity and the x-axis as a function of time is given by
(b) Shows that the projection angle θ0 for a projectile launched from the origin is given by
where the symbols have their usual meaning
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