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two girl scouts are sitting in a large canoe on a still lake while at summer camp the canoe happens to be oriented with
a vehicle is traveling at 70 ms when the driver applies the brakes the vehicle moves 15 meter before it comes to a
an asteroid is moving along a straight line a force acts along the displacement of the asteroid and slows it down the
your science teacher has assigned you the task of building a water barometer you have learned that the pressure of the
light from a lamp which emits light at several discrete different wavelengths illuminates an 800 linemm diffraction
a bullet of mass 880 x 10-3 kilogram moving at 1250 ms impacts a tree stump and penetrates 400 centimeter into the wood
a rocket is fired vertically and ascends with a fix vertical acceleration of 20 ms2 for 10 minute its fuel is then all
a van of mass 1420 kilogram traveling at 20 ms is at the foot of a hill that rises 120 meter in 2 kilometer at the top
determine the change in potential energy of a 798 kilogram person when he takes an elevator from the first floor to
as part of a physics experiment you stand on a bathroom scale in an elevator though your normal weight is 610 newton
a rocket rest frame s traveling at a speed of v05c relative to the earth rest frame s shoots forward bullets traveling
a ball is shot from a compressed air gun at twice its terminal speed for the subsequent suppose the drag force depends
observers in a frame s arrange for two simultaneous explosions at time t0 the first explosion is at the originx1y1z1 0
bob and joe are each making a 500 mile trip bob leaves at noon and drives 65mph uniformly joe leaves at1240 pm find how
a 250 gram object moving to the right at 200 cms overtakes and collides elastically with a 80 gram object moving in the
starting form rest a 500 kilogram block slides 250 meter down an incline of 300o the coefficient of kinetic friction
a sound wave travels twice as far in neon ne as it does in krypton kr in the same interval both neon and krypton can be
a siren is made by blowing a jet of air through 20 equally spaced holes in a rotating disk the time it takes for
a 14 kilogram box slides down a long frictionless incline of angle 30 degree it starts from rest at time t 0 at the
you are pushing a refrigerator across the floor of your kitchen you exert a horizontal force of 330 newton for 76
in a circus act a 80 kilogram clown is shot from a cannon with an initial velocity of 19 ms at some unknown angle above
a 0350 kilogram particle slides around a horizontal track the track has a smooth vertical outer wall forming a circle
a 20 gram particle moving at 50 ms makes a perfectly elastic head on collision with a resting 10 gram objecta evaluate
a spring with spring constant k 160 nm is suspended vertically with its upper end fixed to the ceiling and its lower
after a day of testing race cars you decide to take your own 1550 kilogram car onto the test track while moving down