Physics grade 9

est 1. Problem Solving (10 pts.) Show your Solution. 1-10 .A 5.5 x104 kg airplane is flying at 85m/s at an altitude of 1.2x10*m. Find the plane's a. Potential energy, b kinetic energy, and c. mechanical energy. Given: m =5.5x 10*kg v= 85m/s h= 1.2x 104m 11 -20. A hockey player applies a 70-N force to a 170-g hockey puck in a span of 2.20 second. Determine the impulse experience by the hockey puck. If the hockey puck started at rest, what is its final velocity? 21 -30. A local football player is practicing a football on top 25-m high hill. He kicks the soccer ball, which land 40m from the base hill. Determine the initial horizontal velocity of the soccer ball. t II. IDENTIFICATION. Identify the following