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Consider two balls colliding in the absence of external forces. One ball has a mass of 5kg and the other of 7kg. Ball #1 had speeds of 1 m/s and 10 m/s before and after the collision which lasted 0.2 seconds. Compute the average (over time) of the contact force between the two balls
(hint: Utilize the momentum-impulse theorem)
A certain part of an aircraft engine has a volume of 2.6 ft3. Determine how much weight is saved by using aluminum instead of nickel
A person sees clearly wearing eyeglasses that have a power of -5.00 diopters, If the person wants to switch to contact lenses placed directly on the eyes, what lens power should be prescribed
The fast train known as the TGV Atlantique (Train Grande Vitesse) that runs south from Paris to Le Mans in France has a top speed of 310 km/h. If there is a curve with a 1.00 km radius, to what speed must the train be slowed
A solid has a volume of 8cm3. When weighed on a spring scale calibrated in grams, the scale indicates 20g. What does the scale indicate if the object is weighed as immersed in a liquid of density 2g/cm3.
q1. a baseball thrown at an angle of 55.0circ above the horizontal that strikes a building 18.0 rm m away at a point
The acceleration of a motorcycle is given by 0.,(1) = AI -B1 2, where A = 1.50 m/s3 and B = 0.120 m/ s4 The motorcycle is at rest at the origin at time I = O. (a) Find its position and velocity as functions of time. (b) Calculate the maximum velocity..
The 230,000 lb space-shuttle orbiter touches down at about 220 mi/hr. find the corresponding distance (in feet) traveled by the orbiter
A boat with a speed of 10.0 m/s aims directly across a 250-m-wide river. If the water current is 2.00 m/s, how far downstream will the boat be when it reaches the other side
A particle of charge -60nC is placed at the center of anon-conducting spherical shell of inner radius 20cm and outerradius 25cm. The spherical shell is uniformly charged with acharge density of -1.33μC/m3.
A 2000kg truck pulls a 700 kg trailer. Starting from rest the truck begins accelerating with an acceleration of 4.5m/s^2. what force does the trailer exert on the car
question what fraction of the power radiated by the sun is intercepted by the planet mercury? the radius of mercury is
A 62.35-kg person runs and jumps off a 2.46 m cliff at a velocity of 4.75 m/s into water. What is the total work (net work) of the jumper when he hits the surface of the water
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