Reseña de película radioactive de una cuartilla

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)