This is an original exam question by Prof Kay Han.  It is fo…

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   A [x]-kg cart is moving forward at [y] m/s on a frictionless surface. Then you apply a [a]-N forward force on it for [b] seconds in the same direction. Use impulse-momentum considerations to calculate the final speed of the car.

This is an original exam question by Prof Kay Han.  It is fo…

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   A deer is stranded on a frozen pound.  Suddenly, it coughs up a piece of twig it swallowed earlier.  The piece of twig flies forward at 2 m/s.  In which direction will the deer move.

This is an original exam question by Prof Kay Han.  It is fo…

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   A roller coaster drops from a high point of the track.  On the way down, the mechanical energy