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a 621 kilogram skier coasts up a snow-covered hill that creates an angle of 231 degree with the horizontal the initial
a railroad car of mass 23 x 104 kilogram moving at 400 ms collides and couples with two coupled railroad cars each of
a 500 gram object moving to the right at 200 cms makes an elastic head-on collision with a 100 gram object that is
a helicopter starting from rest accelerates straight up from the roof of a hospital the lifting force does work in
the postal system has gone to a nine-digit zip code if the fifth and sixth digit cannot be a 0 and the ninth digit
a projectile is launched with an initial speed of 40 ms at an angle of 20 degree above the horizontal on flat ground
a magnetic fields pulls on an electron with 86 mn of force in the x direction while an electric filed pulls with 52 mn
a high speed test track for cars has a curved section an arc of a circle of radius r 752 meter the curved section is
a helicopter is ascending vertically with a speed of 620ms at a height of 125 meter above the earth a parcel is dropped
an airplane have airspeed of 162 kmh and an apparent heading due south if a 450 kmh wind blows from the southeast then
beams of high-speed protons can be produced in guns using electric fields to accelerate the protonsa find what
each second 125 x 1019nbspelectrons in a narrow beam pass through a small hole in a wall the beam is perpendicular to
an 0179 kilogram baseball is thrown with a speed of 228 ms it is hit straight back at the pitcher with a final speed of
a barefoot field-goal kicker imparts a speed of 21 ms to a football initially at rest if the football has a mass of 03
determine the power a car engine contributes to speeding the 1300 kilogram car up to a highway speed of 650 mih in 170
a wind turbine is initially spinning at a constant angular speed as the winds strength gradually increases the turbine
a piece of ice originally at 0c is added to a styrofoam cup of negligible mass containing 120 gram of room temperature
a woman pushes a 25 kilogram lawn mower if f30 newton and theta37o determine the acceleration of the mower and find the
a solid cylinder of mass 10 kilogram is pivoted about a frictionless axis thought the center o a rope wrapped around
a learner m 66 kilogram falls freely from rest and strikes the ground during the collision with the ground he comes to
for charging process the voltage across the capacitor as a function of time is given by vc epsilon1-exp-ttaua when
a baseball has mass 0145 kilograma if the velocity of a pitched ball has a magnitude of 460 ms and the batted balls
a race car accelerates uniformly as it leaves the pit area going from rest to 305 kmh in a semicircular arc with a
a bullet is fired at a block of wood whose mass is 2000 gram and suspended as a ballistic pendulum the speed of the
a baseball player with mass m 75 kilogram sliding into second base is retarded by a frictional force of magnitude 500