(1) A small mailbag is released from a helicopter that is descending steadily at 1.50m/s. After 2.00s, (a)what is the speed of the mailbag (b) how far is it below the helicopter? (c) what are your answers in parts (a) and (b) if the helicopter is rising steadily at 1.50m/s.

(2) A bartender slides a beer mug at 1.50m/s towards a customer at the end of a frictionless bar that is 1.20m tall. The customer makes a grab for the mug and misses and the mug sails off to the end of the bar. (a) how far away from the end of the bar does the mug hit the floor. (b) what are the speed and direction of the mug at impact.

(3) A fireman 50.0m away from a burning building directs a stream of water from a ground-level fire hose at angle of 30 degrees above the horizontal. If the speed of the stream as its leaves the hose is 40.0m/s at what height will the stream of water strike the building.

(4) Determine which of the following moving objects obey the equations of projectile motion developed. (a) a ball is thrown in an arbitrary direction. (b) a jet airplane crosses the sky with its engines thrusting the plane forward. (c) a rocket leaves the launch pad. (d) a rocket moves through the sky after its engines have failed. (e) a stone is thrown under water.