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Question: Mike is a 70 kg pole-vaulter. He falls from a peak height of 5.90 m after pole-vaulting over a crossbar setat that height. He lands on a thick mat. When Mike first makes contact with the mat, his center of gravityis only 1.0 m high. During Mike's impact with the mat, the mat compresses. At the point of maximum compression, Mike's vertical velocity reaches zero, and his center of gravity is only 0.5 m high.
A 6.00 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.360. Determine the kinetic frictional force that acts on the box when the elevator is accelerating upward with..
Determine the magnitude of the resultant force and its direction, measure counterclockwise from the positive x axis.
A 10.0 m rope of negligible mass connects two astronauts, each having a mass of 75.0 kg. find the initial angular momentum of the system
Using this relation, determine the maximum density ratio (ρy/ρx)max that can occur across a normal shock wave in air.
The femur is a bone in the leg whose minimum cross-sectional area is about 4.10 x 10-4 m2. Obtain the maximum stress that this bone can withstand
A solenoid has a radius Rs = 3 centimeter, length L = 28.5 centimeter, and Ns = 125 turns. The current in the solenoid goes from 8.95 Amp to 3.90 Amp in 4.00 second. Find the magnitude of average induced emf in the coil
A motorist driving a 1000 kilogram car wishes to increase her speed from 10 m/s to 30 m/s in 10 second. Obtain the power required to accomplish the increase
A concave shaving mirror has a radius of curvature of 40.1 cm. How far is the mirror from the man's face
What is the angular frequency in rev/s of combination.
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 574 Hz and has a speedof 24.0 m/s. What frequency does the motorcyclist hear
A top spins at 30 rev/s about an axis that makes an angle of 30 deg with the vertical. what is the precession rate
A dolphin wants to swim directly back to its home bay, which is 0.760 km due west. It can swim at a speed of 4.23 m/s relative to the water, What direction should the dolphin head
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