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An object initially at rest breaks into two pieces as the result of an explosion. One piece has twice the kinetic energy of the other piece .What is the ratio of the masses of the two pieces? Which piece has the larger mass?
An artillery gun is firing a shell with the initial velocity V0 =250 m/s at an angle 1 =60o to the horizontal. Find the time interval t between shots
a 48 kg skier skis directly down a frictionless slope angled at 13deg to the horizontal. assume the skier moves in the
A skater holds her arms outstretched as she spins at 150 rpm. What is the speed of her hands if they are 145 cm apart
If the lumberjack now trots toward the other end of the log with a speed of 2.7 m/s relative to the log, illustrate what is the lumberjack’s speed relative to the shore?
Imagine that you swing about your head a ball attached to theend of a string. The ball moves at a constant speed in a horizontal circle. What centripetal force are you imparting to the ball via the string
question a child throws a ball downward from a tall building. note that the ball is thrown not dropped and disregard
Ship A is located 4.2 km north and 2.6 km east of ship B. Ship A has a velocity of 22 km/h toward the south and ship B has a velocity of 38 km/h in a direction 38° north of east. At what time (in h) is the separation between the ships least
An astronaut's pack weighs 18.8N when she is on earth but only 1.95 N when she is at the surface of an asteroid. What is the mass of the pack on the asteroid
A dragster accelerates to a speed of 100 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster
What is the horizontal component of velocity
a capacitor is charged to a potential of 12.0v and is then connected to a voltmeter having an internal resistance of
a student playing tetherball hits the ball so it moves in acircle around the central pole. What is the new angle of the ball if he hits the ball at the same tangential speed
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