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a car traveling at 55 kmh hits a bridge abutment a passenger in the car moves forward a distance of 69 cm with respect
a 650-kg person throws a 00410-kg snowball forward with a ground speed of 260 ms a second person with a mass of 550 kg
a 450-kg girl is standing on a 158-kg plank the plank originally at rest is free to slide on a frozen lake which is a
a rifle with a weight of 20 n fires a 40-g bullet with a speed of 210 msa find the recoil speed of the riflemsb if a
two 53cm x 53cm metal plates are separated by a 020--thick piece of teflon dielectric constant for teflon is k21 its
a football punter accelerates a football from rest to a speed of 13 ms during the time in which his toe is in contact
a 1030-kg car is pulling a 285-kg trailer together the car and trailer have an acceleration of 200 ms2 in the positive
while running a person dissipates about 060 j of mechanical energy per step per kilogram of body mass if a 63-kg person
a person pulls a toboggan for a distance of 378 m along the snow with a rope directed 267 deg above the snow the
calculate the force of gravity on a spacecraft 25600 km 4 earth radii above the earths surface if its mass is 1500 kg n
a resistor is constructed by forming a material of resistivity 35x105 into the shape of a hollow cylinder of length 40
if the 1 kg standard body has an aceleration of 200 ms2 at 20 degrees to the positive direction of an x axis what area
a car is traveling at 450 kmh on a flat highwaya if the coefficient of friction between road and tires on a rainy day
if the coefficient of kinetic friction between a 300 kg crate and the floor is 033 what horizontal force is required to
a 510e4 kg space probe is traveling at a speed of 12900 ms through deep space retrorockets are fired along the line of
what are the characteristics of longitudinal and transverse waves describe their differences and
a white billiard ball with mass mw 157 kg is moving directly to the right with a speed of v 343 ms and collides
a 0400 glider is moving to the right on a frictionless shyhorizontal air track with a speed of 0750 when it makes a
three identical boxcars are coupled together and are moving at a constant speed of 280 on a level frictionless track
the refractive index n of glass depends on the color wavelength of the light passing through it the most common optical
a pilot whose mass is 720 kg makes a loop-the-loop in a fast jet assume that the jet maintains a constant speed of 185
the centers of a 70 lead ball and a 110 lead ball are separated by 60 what gravitational force does each exert on the
the upward normal force exerted by the floor is 700 on an elevator passenger who weighs 720 what is the reaction force
a boat is pulled by two locomotives through a canal of length 204 km as shown belowthe tension in each cable is 509e3 n
on a playground slide a child has potential energy that decreases by 1000 j while her kinetic energy increases by only