a car of mass 600kg tows a trailer of mass 250kg in a straight line using a rigid tow-bar. the resistive force on the car is 200N and the resistive force on the trailer is 80N if the forward thrust produced by the engine of the is 800N what is the acceleration of the car and the tension of the tow-bar (draw a free body diagram)​

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?