A QUE DISTANCIA SOBRE UNA MESA DEBE COLOCARSE UNA FUENTE DE 50 cd, PARA QUE PRODUZCA SOBRE ELLA LA MISMA INTENSIDAD QUE PRODUCIRIA UNA LAMPARA DE 150 cd UBICADA A 10 m DE DISTANCIA.

In physics the desire of an object to keep doing what it is doing is termed?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.