An object, 0.04 m high, is placed in front of and at right angles to the axis of a concave
the mirror which has a radius of curvature 0.15 m. If
a real image 0.12 m high is obtained,
determine by scale drawing or otherwise, the
the distance of the object from the mirror.
How far, and in what direction, must the
the object be moved in order to obtain a virtual
image 0.12 m high.

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.