You and your friend are playing running catch, where you run towards each other while throwing a ball back and forth. If you are running at 1.00 m/s, your friend is running at 2.00 m/s, and you can throw the ball at 10.0 m/s, how far will the ball have traveled if you
start 500 m apart? Assume the time it takes to catch and then throw the ball is negligible.
O 500.0 m
O 1670 m
O 5000 m
O 1500 m

The magnets would be | n s | and | s n|

Ray 2 should cross through the focal point on the right side of the lens

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)