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Q. A 59kg woman trips while walking down the street. She stumbles forward and falls onto her outstretched right hand. At the instant her hand contacts the ground her whole body is moving downward at a velocity of 9m/s and has a downward acceleration of 9.8m/s^2 (gravity). Her body fast decelerates after contacting the ground; after 0.1s it has stopped moving.
Part A:Assume her entire body mass is halted in 0.1s, how much force did her hand experience?
While she hit the ground with her hands, her wrist was extended at 45° and her elbow was bent 45°. The length is 27 cm and her upper arm is 32 cm.
Part B:Assume the ground reaction force is acting directly vertically at the wrist, what is the moment about her elbow?
Compute the Brewster’s angle and angle of refraction.
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A projectile is fired at an upward angle of 45° from the top of a 212 m cliff with a speed of 161 m/s. What would be its speed while it strikes the ground below.
Assume that Newton's law of universal gravitation can be applied to these two students and find the gravitational force (in Newtons) that one student exerts on the other when they are separated by 0.493 m. Consider entering the answer using scient..
The mass of the Moon is 7.35 × 10^22 kg, whereas that of Earth is 5.98 × 10^24 kg. The average distance from the center of the Moon to the center of Earth is 384,400 km.
How far will it travel before becoming airborne
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