A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 155 mi/h in 2.30 s. Required:
a. Find the average acceleration of the plane.
b. Assuming the acceleration is constant, find the distance the plane moves.

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.