1. "Tony Schumacher is a NHRA Top Fuel drag racer. He holds the world record for the fastest quarter mile pass where he reached a speed of 150.2 m/s is 3.667 seconds. What was his acceleration?" 2. "An F16 fighter jet at a high altitude is flying at 472 m/s and acceleration to 611 m/s in 7.2 seconds. What is the acceleration of the fighter jet?"

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.