You start this journey at your desk, by walking 5 m in the North direction to the front of the class, 21 m in the South direction to the water fountain, and then you retrace your steps back to your desk. Calculate your displacement.

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.