At a certain location, a gravitational force with
a magnitude of 350 newtons acts on a 70.-kilogram
astronaut. what is the magnitude of the gravitational
field strength at this location?
(1) 0.20 kg/n (3) 9.8 m/s2
(2) 5.0 n/kg (4) 25 000 n•kg

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.

Work requires a force which causes: potential energy or motion