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A 25 kg bumper car moving to the right at 5 m/s overtakes and collides elastically with a 35 kg bumper car moving to the right. After the collision, the 25 kg bumper car slows to 1.5 m/s to the right, and the 35 kg car moves at 4.5 m/s to the right. Find the magnitude of the velocity of the 35 kg bumper car BEFORE the collision. (type the NUMBER ONLY, do not include units or direction, round to 1 decimal place, do not use scientific notation)
A sanding disk with rotational inertia 2.0 multiply.gif 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of 8 N·m about the central axis of the disk. compute the angular momentum of the disk
A ball moving at a speed of 3.0 m/s hits an identical stationary ball. what is the velocity and direction of the incoming ball after the collision
An automobile club plans to race a 700kg car at the local racetrack. The car needs to be able to travel around several 155m radius curves at 87km/h.
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density in g/cm3
one mole of an ideal monatomic gas is expanded adiabatically and quasi-statically from a pressure of 1172 kpa and a
a bullet of mass 50 g traveling at 400 m/s due north strikes a rock of mass 500 g at rest and ricochets off the rock going due east. How much energy was lost in the collision
A 0.24-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, Find the tension in the stick
Suppose capacitors C1= 4F and C2= 6F are fully charged, then a switch is closed to let them discharge through two resistors, R1 =10 Ω and R2=25 Ω. How long will is take until half of the initial total charge is discharged?
A girl is sitting nearthe open window of a train that is moving at a velocity of17.00 m/s to the east. What frequency does the girl now hear
An astronaut has a mass of 50 kilogram. Her vehicle travels to 6400 kilometer above earth and she weighs 1/4 of what she weighed on earth (which is 122.5N). find the acceleration on her mass at that point in space
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m. What is the frequency of the sound
An inflatable raft (unoccupied) floats down a river at an approximately constant speed of 3.8 m/s. What must be the horizontal distance between the raft and the bridge when the child releases the stone
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