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A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the level table. The initially moving billiard ball deflects 30.0o from its original direction. What is the speed of the initially stationary billiard ball after the collision?
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 64 kg person develops a power of 65W throughout a race, how fast is the person running? Assume that a running step is 1.5 m long.
The maximum Doppler shift occurs if the Earth's orbital motion takes it directly toward or directly away from the alien planet. How large is that maximum wavelength shift? Express your answer both in meters and as a percentage of the unshifted wav..
An ideal fluid in a pipe of diameter 14cm is moving at 6.0 m/s. If the incompressible fluid density is 1.05g/cc, what is the flow rate in kg/s and what is the speed of flow if the pipe narrows to 4.0cm radius?
A 0.287-kg particle undergoes simple harmonic motion along the horizontal x-axis between the points x1= -0.269 m and x2= 0.473 m. find the total mechanical energy of particle
A white billiard ball with mass mw = 1.43 kg is moving directly to the right with a speed of v = 3.42 m/s and collides elastically with a black billiard ball with the same mass mb = 1.43 kg that is initially at rest.
A spherical water drop 2.4 µm in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 3696 N/C.
A 40 kg crate is pulled across a rough horizontal surface with a force of 350 N at an angle of 25o above the horizontal. What is the horizontal acceleration, in m/s2, of the crate
What friction torque is necessary to reduce its angular speed from 90.0 {rm rpm} to 45.0 {rm rpm} in a time interval of 32.0 {rm s}.
q1. a 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. if the trampoline
A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. At what angle is the rock thrown
The blue ball moves at an angle of -35° and a velocity of 2.1 meters/second. What is the final y-momentum of the system?
A 50g ball travelling at 25m/s is bounced off a brick wall and rebounds at 22m/s. A high speed camera records this event. If the ball is in contact with the wall for 3.5ms, what is the average acceleration of the ball throughout this time interval..
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