In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, suffering only minor injuries. Assume that his speed at impact was 49 m/s (terminal speed), that his mass (including gear) was 70 kg, and that the magnitude of the force on him from the snow was at the survivable limit of 1.5 × 105 N. What are (a) the minimum depth of snow that would have stopped him safely and (b) the magnitude of the impulse on him from the snow?
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Physics, 22.06.2019 11:00, SoccerHalo
If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c
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Physics, 23.06.2019 06:00, ShilohTheBoy
Aforklift raises a box above the floor and does 2,000 j of work. if the forklift motor consumes 3,000 j of electrical energy from the battery to raise the box, what is the efficiency of the lift?
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