$1.$ If an object weighing $196$ N has a kinetic energy of $950$ J$,$ what is its velocity? 

2. A $50\mathrm{.}0$ kg carton is dragged up a low$-$friction plank onto the back of the truck. The length of the plank is $3\mathrm{.}00$ m and it makes an angle of $15\mathrm{.}0$ with the ground. 

With respect to the bottom of the plank, the gravitational potential energy of the carton on the truck will be? 

 

 

 

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