This is аn оriginаl exаm questiоn by Prоf 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 аn оriginаl exаm questiоn by Prоf Kay Han. It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website. Two identical deers, deer A and deer B, stand by a pond. They spot a tiger nearby and start to run. Deer B runs twice as fast as deer A. Compare the kinetic energy.