Newton's first law states, an object in motion stays in motion until acted upon by an unbalanced force. Kyle can't stop until he runs into the wall, an unbalanced force.
Newton's First Law states, an object in motion will stay in motion unless acted upon by an unbalanced force. This means that Kyle couldn't stop until he crashed into the wall. The wall acted as the unbalanced force, causing Kyle to stop.
Kyle is riding is new bike.
Kyle is riding through town and he realizes he doesn't know how to work the brakes!