In a walking investigation, Josephine walked a total distance of 40 feet. At the
halfway point, she had walked for 25
seconds. She stopped for 5 seconds to tie
her shoe and then continued for 25 more
seconds. Sketch a graph that shows
Josephine's distance from the starting point
over time

What is the kinetic energy of a 10-kg bicycle moving at 10 m/s

Acurve connects the data points that are plotted. (physical science chapter 11 motion)

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)