A66-foot-tall woman walks at 55 ft/s toward a street light that is 2424 ft above the ground. what is the rate of change of the length of her shadow when she is 19 ft19 ft from the street light? at what rate is the tip of her shadow moving? let l be the length of the woman's shadow and let x be the woman's distance from the street light. write an equation that relates l and x.

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2