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Q. A student (m = 60 kg) falls freely from rest and strikes the ground. All through the impact with the ground, he comes to rest in a time of 0.04s. The average force exerted on him by the ground is +18000N, where the upward direction is taken to be positive direction. From what height did the student fall? Suppose that the only force acting on him all through the impact is that because of the ground.
Determine the maximum horizontal force that can be applied to the block before it slips.
Determine the tension in each string
A uniform disk turns at 4.3 around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk.
Light is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v.
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
You're driving down the highway late one night at 20 m/s while a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11m/s^2 .How much distance is be..
Find out the edge dimension of each cube
Determine the magnitude of door's angular acceleration.
At a factory, a noon whistle is sounding with a frequency of 480-Hz. As a car travelling at 79 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory.
Describe the displacement of the airplane when the radar was tracking it-RBA=RB-RA. What are the components of RBA.
what the torque increase or decrease as the angle increase. Calculate the magnitude of the torque.
An 82 kg lumberjack stands at one end of a 355 kg floating log. Both the log and the lumberjack are at rest initially. If the lumberjack now trots toward the other end of the log with a speed of 2.70 m/s relative to the log, what is the lumberjack's ..
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