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A body of mass m1 , moving with velocity u1 collides head on with a body of mass m2 moving with a velocity u2 the two bodies stick together after the collision the loss of kinetic energy after the collision is ?Ans) Initial KE of the system= 1/2 [ m1.u1^2 + m2.u2^2 ]applying conservation of momentum we get new velocity of the new body= (m1.u1-m2.u2) / (m1+m2)new KE of the Body= [ (m1.u.1 - m2.u2) / 2.(m1+m2) ]^2Subtracting and simplyfing we get the loss in KE after Collision= [ m1.m2. (u1 + u2)^2 ] / [ 2.(m1 + m2) ]
A man pushes a couch a distance of 0.75 m. If 113 J of work is done. what is the magnitude of the horizontal force applied?
12 to 16 pages project or assignment on electrostatic shielding
What is the principle of generating ultrasonic waves? The general principle comprised in generating ultrasonic waves is to reasons some dense material to vibrate very quickly.
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Since the objects stick together they will be a part of plastic collision...so. conservation of kinetic energy cannot be applied...Apply conservation of linear momentum and then find individual velocitiesthen loss of kinetic energy will be change in kinetic energy......So,it will become equal to amount of work done.
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