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A 40kg child slides down a frictionless playground slide, starting from rest at a height of 2.2 m. He leaves the bottom of the slide moving horizontally at some velocity(v1). He then immediately lands on a wagon (25kg) which rolls off with the child with velocity (v2). Rolling friction is .07 with the ground. The child's velocity is calculated to be 6.56 m/s and the child and wagon's velocity together is calculated to be 4.04 m/s. What is the distance the two roll to before stopping?
In 1994, Susan Williams of California blew a bubble-gum bubble with a diameter of 58.4 cm. what would the tangential speed of those points be
As you bounce a tennis ball of mass 5.30 10-2 kg off a wall, its velocity changes from vx = 10.5 m/s to vx = -7.4 m/s. Find the impulse applied to the ball
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
A small disk (not sphere) of radius a and charge +Q is concentric with larger disk, connected to a thin ring of radius b and charge -Q. What is the total capacitance
The near point of a naked eye is 32 cm. When an object is placed at the near point and viewed by the naked eye, Determine the angular size of the image
A 10 gauge copper wire carries a current of 24 A. Assuming one free electron per copper atom, calculate the magnitude of the drift velocity of the electrons
Someone points out that a ball, if released from rest on a hill, will roll down the hill with increasing momentum. explain the Law of Conservation of Linear Momentum
When the power is turned off on a turntable spinning at 78.0 rpm , you find that it takes 10.5 revolutions for it to stop while slowing down at a uniform rate. How long does it take to stop after the power is turned off
A 20.00kg sled is being pulled across a horzontal surface at a constant velocity. Determine the kinetic frictional force
A charged particle moves 19 mm in electric field with magnitude of 242 N/C If electrical potential energy of moving charge decreases by 91.3 x 10^-19 J due to this motion what is the charge of this moving particle
An automobile travels on a straight road for 40.0 km [E] at 30.0 (km/h). It then continues in the same direction for another 40.0 km [E] at 60 (km/h). Estimate the average speed, distance, displacement, & average velocity for the trip.
approximately how far does it move while stopping? Express your answer to one significant figure and include the appropriate units.
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