in un negozio di arredamento, un addetto preleva da uno scaffale alto 1,95m un pacco di coperte e lo deposita a terra, spostandolo a velocita costante e compiendo un lavoro di -197j. Qual'è la massa del pacco? Il secondo addetto compie la stessa operazione, ma durante la discesa il pacco ha un'accelerazione verso il basso di 0,20m/s/2. Quanto lavoro compie il secondo addetto?(non considerare le fasi iniziali e finali del moto del pacco)

In a bumper car arena, two cars of equal mass are heading straight toward each other. the orange one is traveling at a speed of 5 meters per second. the green one is traveling at a speed of 2 meters per second. which of the forces most affects the motion of the bumper cars after they collide? a) gravity b) friction c) the other car d) wind resistance

Why is alchemy not considered to be a science ?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.