Question

15. While playing the game of basketball, an experienced player often uses the concepts

of projectile motion. Such a player knows that she/he should properly adjust the

angle of projection (0) of the ball when the ball is released with a certain velocity, u.

This adjustment has to be done so that the vertical distance, travelled by the ball,

in a time to equals the vertical separation between the basket and the point of
projection. Also, in the time to» the ball should travel a horizontal distance equal to
the horizontal separation between the basket and the point of projection.

(1) For a given speed of projection, the horizontal distance, covered by the ball, has
its maximum value when the angle of projection equals

(a) 45 (b) 90

30 d) 60

(2) The time, T, taken by the ball to reach the point of maximum height above its
point of projection equals :

(a) u 81n6 (b) ug sin

(C) 8Sin (d) sin6

3) Por a given speed of projection, the maximum horizontal distance, covered by
the ball, is the same when its angle of projection is either:
(a) 45° or 75°

(b) 15° or 75°

(c) 30° or 75°

(d) 60 or 75

4) The maximum height Hay reached by the ball equals :
(a)sino
8
b) sin-e

(c) sin 8

(d) u sin" 0
8

(6) During its flight' after being released by the player, the trajectory of the ball

i8

(a) an are of a circle

(b) a straight line

(c)a parabolic path

(d) a part of an ellipitical path​

Answer 1

Answer:

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