A bullet was fired horizontally with 20m/s from the top of a building 20m high. When the bullet was 10m above the ground, incidentally it hits a bird. Find the
time taken to hit the bird and the velocity of bullet when it hits the bird.

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k