If there is 800 kg truck going 35 m/s down the highway and the trucker's brakes apply 1000N to stop the truck in 28 seconds. Which two of the following is needed to find the momentum
of the truck? * 1
(13 Points)
35 m/s and 1000 N
800 kg and 35 m/s
800 kg and 1000 N
800 kg and 28 seconds

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?