What is this? Plz I need help...

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)