An airplane is flying at a constant speed in a positive direction. it slows down when it approaches the airport where it's going to land. which term describes the slowing of the plane?

a) stationary
b) positive velocity
c) positive acceleration
d) negative acceleration
e) constant velocity

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

An atom that has gained or lost electrons is called an _