1. For the masses shown with the indicated velocities. Consider the increasing direction of the x-axis toward the right.
9.0 kg 4.0 m/s
8.0 m/s
6.0 kg
a) Find the magnitude of the momentum of the system. (Do not include the units
in the answer)
Your answer
b) What is the direction of the momentum of the system?
Choose
c) Determine the total kinetic Energy of the System. (Do not include the units in
the answer)
Your answer

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.