A constant horizontal force of 10N pushes a 20kg-mass through a medium that resists its motion with 0.5N for every m/s of speed. The initial velocity of the mass is 7 m/s in the direction opposite to the direction of the applied force. Find the velocity of the mass for t0.

Question

A constant horizontal force of 10N pushes a 20kg-mass through a medium that resists its motion with 0.5N for every m/s of speed. The initial velocity of the mass is 7 m/s in the direction opposite to the direction of the applied force. Find the velocity of the mass for t>0.

idealist10 · Answer

@satellite73 @iGreen @Directrix @paki

godlovesme · Answer

@bibby  can u help?

godlovesme · Answer

oh sorry..

idealist10 · Answer

@SithsAndGiggles

idealist10 · Answer

This is a differential equations problem.

anonymous · Answer

I think the first step is to draw up a free-body diagram. This might be tricky since the question doesn't explicitly state whether the object is being pushed on a surface (and so gravity is counter-acted upon) or not.