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at time t0 a 2650kg rocket in outer space fires an engine that exerts an increasing force on it in the x direction
a 135 mci radioactive tracer is made in a nuclear reactor when it is delivered to a hospital 18 hours later its
an astronaut in space cannot use a scale or balance to weigh objects because there is no gravity but she does have
you are standing on a large sheet of frictionless ice and are holding a large rock in order to get off the ice you
two ice skaters daniel mass 600kg and rebecca mass 450kg are practicing daniel stops to tie his shoelace and while at
force of a baseball swing a baseball has mass 0146kga if the velocity of a pitched ball has a magnitude of 400 msand
a 100 kg shell is fired vertically upward at its max height of 5000 m it explodes into 3 pieces its noticed that all 3
a 140 g 900 mph fastball comes across the plate very nearly horizontally and is batted at 900 mph at a 300 degree angle
an air-hockey pucks floats across the table and bumps into a second puck initially at rest the first puck - mass 00250
a particle leaves the origin with an initial velocity v 100 ms and a constant acceleration a -100 - 0700 ms2 what
an object is projected horizontally at 80ms from the top of a 1225 m cliff how far from the base of the cliff will the
in 1926 babe ruth hit a home run that was estimated to have landed 180m from home plate and to have reached a height of
a camper dives from the edge of a swimming pool at water level with a speed of 80ms at an angle of 300 degrees above
a person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of
a golfer standing on a fairway hits a shot to a green that is elevated 691 m above where she is standing if the ball
a train moving at a constant speed of 580 kmh moves east for 460 min then in a direction 570deg east of due north for
a typical ten-pound car wheel has a moment of inertia of about the wheel rotates about the axle at a constant angular
a fisherman accidentally steps off the edge of a 40 meter-high dock and falls into the lake below the dock how long
a certain photon after being scattered from a free electron at rest moves at an angle of 120deg with respect to the
a tennis ball is struck at the base line of the court 125 m from the net the ball is given an initial velocity with a
a uniformly accelerated car passes three equally spaced traffic signs the signs are separated by a distance d 25 m the
the energy eigenstates of the hydrogen atom are described by schroumldinger wavefunctions r where the energy of the
suppose that two objects attract each other with a gravitational force of 16 units if the distance between the two
near the surface of the earth there is an electric field of about 150 vm which points downward two identical balls with
a calculate the magnitude of the gravitational force exerted on a 429-kg satellite that is a distance of 291 times