9(a) The range of a rifle bullet is 1200 yards when a is the angle of...

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9(a) The range of a rifle bullet is 1200 yards when a is the angle of elevation of projection. Show that if the rifle bullet is fired with the same elevation from a car travelling at 10 miles per hour towards the target, the range will be increased by 220-/tan a (b) A ball is dropped from the top of a tower of height h. At the same moment, another ball is thrown from a point of the ground at a distance k from the foot of tower so as to strike the first ball at a depth d. Show that the initial speed and the direction of projection of the second ball are respectively g(h2+k) h and tan 2d 8 9(a) The range of a rifle bullet is 1200 yards when a is the angle of elevation of projection. Show that if the rifle bullet is fired with the same elevation from a car travelling at 10 miles per hour towards the target, the range will be increased by 220-/tan a (b) A ball is dropped from the top of a tower of height h. At the same moment, another ball is thrown from a point of the ground at a distance k from the foot of tower so as to strike the first ball at a depth d. Show that the initial speed and the direction of projection of the second ball are respectively g(h2+k) h and tan 2d 8

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a Lets consider the horizontal motion of the projectile relative to the moving car The horizontal velocity of the projectile with respect to the car is the sum of the velocity of the car towards the t... View the full answer