Astate patrol officer saw a car start from rest at a highway on-ramp. she radioed ahead to another officer 30 mi along the highway. when the car reached the location of the second officer 26 min later, it was clocked going 60 mi/hr. the driver of the car was given a ticket for exceeding the 60/mi/hr speed limit. why can the officer conclude that the drive exceeded the speed limit?

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

The consumption of fossil fuels could be

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?