Cart a is moving at 2 m/s and cart b is at rest. after a perfectly elastic collision (cart a is stationary after the collisions), how fast will cart b move? both carts have a mass of 1 kg
b. her mental and emotional health are affected because she is afraid to get back on her bike.
we only need to look at newton's 2nd law of motion:
net force = (mass) x (acceleration)
if the net force on an object is zero, then either its mass or its acceleration must be zero. if it's called an "object", then its mass isn't zero, so its acceleration is zero.