How long is the parachutist in the air

Reference no: EM138815

Q1. A brick is thrown upward from the top of a building at an angle of 45° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building?

Q2. A parachutist bails out and freely falls 66 m. Then the parachute opens, and thereafter she decelerates at 2.3 m/s2. She reaches the ground with a speed of 2.9 m/s. (a) how long is the parachutist in the air? (b) At what height does the fall begin?

Reference no: EM138815

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