When one bumper car hits another, how does the reaction force affect the first car?
a: the car comes to a stop
b: the car moved in the direction opposite of the action force
c: the car moves in the same direction as the action force

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

If frequency goes down, what happens to wavelength? does it get shorter or longer?