** you pull a rope oriented at a 37° angle above the horizontal. the other end of the rope is attached to the front of the first of two wagons that have the same 30-kg mass. the rope exerts a force of magnitude t1 on the first wagon. the wagons are connected by a second horizontal rope that exerts a force of magnitude t2 on the second wagon. determine the magnitudes of t1 and t2 if the acceleration of the wagons is 2.0 m⁄s2.

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

The slope of a velocity time graph over any interval of time gives the during that interval

True or false graphs must include scales that increase by the same amount