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A 1500-kg car is moving westward with a speed of 20m/s and a 3000-kg truck is...

A 1500-kg car is moving westward with a speed of 20m/s and a 3000-kg truck is traveling east with a speed of 16 m/s. Find the velocity of the center of mass of the system. Let east be the positive x-direction.

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Answer #1

Given is:-

Mass and speed of the car   taking east as positive direction

Mass and the speed of the truck is  

Now,

The velocity of the centerr of the mass of the system is given by

by plugging all the values we get

which gives us

hence,

the fianl velocity of the centerr of the mass of the system is 4 m/s towards east or +x axis

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