Which is an example of an object with a momentum of zero?(1 point) A) a car rolling down a hill
B) a swimmer diving off the starting block
C) a puck sliding across the top of an air hockey table
D) an empty canoe sitting on the bank of a river***
***means the answer I think

When does your body conduct current more readily?

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?