1. A mail delivery person walks 200 meters east, turns north and travels 100 meters, then travels 50 meters west. Use graphical techniques to determine the displacement of the
delivery person during this walk. (Scale: 50 meters = 1 cm)

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.