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Why is skiing into a wall of deep powder less hazardous to your health than skiing into a wall of bricks? Assume in both cases that you have the same initial speed and come to a complete stop.
The increased stopping time in powder means a smaller stopping force
The decreased stopping time In powder means larger stopping force
The change in momentum is less in powder
The impulse is less in powder
An astronaut (mass of 100 kg, with equipment) is headed back to her space station at a speed of 0.750 m/s but at the wrong angle. What is her new direction (relative to the initial direction)
How fast should a moving clock travel if it is to be observed by astationary observer as running at one-half its normal rate?
A horizontal force of 109 Newton pushes an 8 kilogram block up a frictionless incline that creates an angle of 23 degree with the horizontal. Find the normal force that the incline exerts on block
Suppose that the hail comes straight down at a mass rate of m/?t = 0.030 kg/s and an initial velocity of v0 = -10 m/s, calculated the force exerted by the hail on the roof
A rope attached to a 20 kilogram wood sled pulls the sled up a 20 degree snow covered hill. A 10 kilogram wood box rides on top of the sled. determine at what value of the tension does the box slip
189.35 J of energy are transferred to a system in the form of heat while the internal energy decreases by 46.99 J
A CD-RM starts from the rest and undergoes uniform angular acceleration until it reaches 26,000 rpm in 0.25s. Though what angle does it rotate during this time
A butterfly fliest from the top of a tree in the center of a garden to rest on top of a red flower at the garden's edge. The tree is 8 m taller than the flower, and the garden is 12 m wide. Determine the magnitudes of the butterfly's displacement?
A small steel ball bearing with a mass of 25.0 g is on a short compressed spring. Calculate the horizontal distance the ball would travel
determine the coefficient of static friction between a motorcycle tires and the pavement as he leans to the side in
Two sources of coherent radio waves broadcasting in phase are located as shown below.(Figure 1) Each grid square is 0.5 m square, and the radio sources broadcast at ?=2.0m.
A cylinder of mass 11.0 kg rollswithout slipping on a horizontal surface. What is the rotational kinetic energy about its center of mass
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