Physics, 18.09.2019 01:00 Solomon4148
In world war ii, there were several reported cases of airmen who jumped from their flaming airplanes with no parachute to escape certain death. some fell about 20,000 feet (6000 m), and some of them survived, with few life-threatening injuries. for these lucky pilots, the tree branches and snow drifts on the ground allowed their deceleration to be relatively small. if we assume that a pilotâs speed upon impact was 123 mph (54 m/s), then what was his deceleration? assume that the trees and snow stopped him over a distance of 3.0 m.
Answers: 1
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Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount
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Physics, 22.06.2019 14:30
When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?
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Physics, 22.06.2019 17:30
Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers total displacement?
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Physics, 22.06.2019 22:00
On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.
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In world war ii, there were several reported cases of airmen who jumped from their flaming airplanes...
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