Balls speed at the lowest point of trajectory
A pendulum is made by tying a 490 g ball to a 52.0 cm-long string. The pendulum is pulled 21.0^circ to one side, then released. What is the ball's speed at the lowest point of its trajectory?
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You drive a car 680 ft to the east, then 340 ft to the north. (a) what is the magnitude of your displacement? What is the direction?
A cardinal (Richmondena cardinalis) of mass 3.90×10-2 and a baseball of mass 0.144 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's momentum?
A 2.61 kg wood block is launched up a wooden ramp that is inclined at a 26° angle. The block's initial speed is 9.04 m/s. What vertical height does the block reach above its starting point?
A 0.950 kg air-track glider is attached to each end of the track by two coil springs. It takes a horizontal force of 0.500 N to displace the glider to a new equilibrium position, x= 0.130 m. Find the effective spring constant of the system.
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