To make a line graph of an object's displacement versus time, you must complete the following steps. place them in the order in which they should be done.

To make a line graph of an object's displacement versus time, you must complete the following steps:
1) Decide the axis with time on x-axis and displacement on y-axis. Do correct labelling.
2)Determine a scale 
2)Plot the points correctly on the graph accordingly
3)Connect the points through a smooth line
 

The car would move to the right with 150 n of force. the 150 n of force from friction and air resistance slows the car from moving to the right with 300 n of force.

100 pounds is 100 pounds no matter the object or item being weighed