physics

Answers on following post

An electron is located between a pair of oppositely charged parallel plates. As the electron approaches the positively charged plate, the kinetic energy of the electron? 

A. Increases

B. Decreases

C. Remains the same

If the speed of a moving object is doubled, which quantity also associated with the object must double? 

A. Momentum

B. KE

C. Gravitational potential energy

D. Acceleration

 A 45 kilogram bicyclist climbs a hill at a constant speed of 2.5 meters per second by applying an average force of 85 Newtons. Approximately how much power does the bicyclist develop? 

A. 115 W

B. 210 W

C. 250 W

D. 320 W