Prelab Exercises for Thrust and Friction

1. A rocket is launched vertically from rest reaching an altitude of 5.2 km after 16 s. of constant acceleration. (a) What was the magnitude of the acceleration of the rocket? (b) What approximations were made for the calculation done in (a)? (c) How many times larger than the acceleration due to gravity is this? (d) Is this rocket safe for human passengers? (e) What is the expression for the error in the acceleration, a, assuming v0 = 0 m/s, xx and tt 2. Give three examples of static friction. 3. Give three examples of kinetic friction.