3. Little Sally Snowman (m = 8 kg) sits at rest atop a slide, 10 m above the ground. She begins sliding frictionlessly down the 15 m long slide. How fast is
she going when she reaches the bottom?
92.9 m/s2

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

What is the rate of change in a objects position?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?