Theory and ExamplesSkydivers A and B are in a helicopter

Chapter 5, Problem 134PE

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Problem 134PE

Theory and Examples

Skydivers A and B are in a helicopter hovering at 6400 ft. Skydiver A jumps and descends for 4 sec before opening her parachute. The helicopter then climbs to 7000 ft and hovers there. Forty-five seconds after A leaves the aircraft, B jumps and descends for 13 sec before opening his parachute. Both skydivers descend at 16 ft sec with parachutes open. Assume that the skydivers fall freely (no effective air resistance) before their parachutes open.

a. At what altitude does A’s parachute open?

b. At what altitude does B’s parachute open?

c. Which skydiver lands first?

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