**Calculations: **

Complete the following acceleration calculations. Show your work.

1. An airplane accelerates down a runway at 3.70 m/s^{2} for 51.3 seconds until lifting off. Determine the distance it traveled before liftoff.

2. A tennis ball is hit, giving it a horizontal velocity of 81 m/s [E]. Air resistance causes a constant acceleration of 4 m/s^{2} [W]. Determine its velocity after 3.3 s.