Applied Mechanics and Graphic Statics
A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will

Never meet
Meet after 10 sec
Meet after 5 sec
Meet after 1 sec

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Applied Mechanics and Graphic Statics
Kinetic friction may be defined as

Ratio of limiting friction and normal reaction
Angle between normal reaction and resultant of normal reaction and limiting friction
Friction force acting when the body is in motion
Friction force acting when the body is just about to move

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